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-rw-r--r--third_party/git/builtin/fetch.c1943
1 files changed, 0 insertions, 1943 deletions
diff --git a/third_party/git/builtin/fetch.c b/third_party/git/builtin/fetch.c
deleted file mode 100644
index f9c3c49f14d9..000000000000
--- a/third_party/git/builtin/fetch.c
+++ /dev/null
@@ -1,1943 +0,0 @@
-/*
- * "git fetch"
- */
-#include "cache.h"
-#include "config.h"
-#include "repository.h"
-#include "refs.h"
-#include "refspec.h"
-#include "object-store.h"
-#include "oidset.h"
-#include "commit.h"
-#include "builtin.h"
-#include "string-list.h"
-#include "remote.h"
-#include "transport.h"
-#include "run-command.h"
-#include "parse-options.h"
-#include "sigchain.h"
-#include "submodule-config.h"
-#include "submodule.h"
-#include "connected.h"
-#include "strvec.h"
-#include "utf8.h"
-#include "packfile.h"
-#include "list-objects-filter-options.h"
-#include "commit-reach.h"
-#include "branch.h"
-#include "promisor-remote.h"
-#include "commit-graph.h"
-#include "shallow.h"
-
-#define FORCED_UPDATES_DELAY_WARNING_IN_MS (10 * 1000)
-
-static const char * const builtin_fetch_usage[] = {
-	N_("git fetch [<options>] [<repository> [<refspec>...]]"),
-	N_("git fetch [<options>] <group>"),
-	N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
-	N_("git fetch --all [<options>]"),
-	NULL
-};
-
-enum {
-	TAGS_UNSET = 0,
-	TAGS_DEFAULT = 1,
-	TAGS_SET = 2
-};
-
-static int fetch_prune_config = -1; /* unspecified */
-static int fetch_show_forced_updates = 1;
-static uint64_t forced_updates_ms = 0;
-static int prune = -1; /* unspecified */
-#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
-
-static int fetch_prune_tags_config = -1; /* unspecified */
-static int prune_tags = -1; /* unspecified */
-#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
-
-static int all, append, dry_run, force, keep, multiple, update_head_ok;
-static int write_fetch_head = 1;
-static int verbosity, deepen_relative, set_upstream;
-static int progress = -1;
-static int enable_auto_gc = 1;
-static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
-static int max_jobs = -1, submodule_fetch_jobs_config = -1;
-static int fetch_parallel_config = 1;
-static enum transport_family family;
-static const char *depth;
-static const char *deepen_since;
-static const char *upload_pack;
-static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
-static struct strbuf default_rla = STRBUF_INIT;
-static struct transport *gtransport;
-static struct transport *gsecondary;
-static const char *submodule_prefix = "";
-static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
-static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
-static int shown_url = 0;
-static struct refspec refmap = REFSPEC_INIT_FETCH;
-static struct list_objects_filter_options filter_options;
-static struct string_list server_options = STRING_LIST_INIT_DUP;
-static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
-static int fetch_write_commit_graph = -1;
-static int stdin_refspecs = 0;
-
-static int git_fetch_config(const char *k, const char *v, void *cb)
-{
-	if (!strcmp(k, "fetch.prune")) {
-		fetch_prune_config = git_config_bool(k, v);
-		return 0;
-	}
-
-	if (!strcmp(k, "fetch.prunetags")) {
-		fetch_prune_tags_config = git_config_bool(k, v);
-		return 0;
-	}
-
-	if (!strcmp(k, "fetch.showforcedupdates")) {
-		fetch_show_forced_updates = git_config_bool(k, v);
-		return 0;
-	}
-
-	if (!strcmp(k, "submodule.recurse")) {
-		int r = git_config_bool(k, v) ?
-			RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
-		recurse_submodules = r;
-	}
-
-	if (!strcmp(k, "submodule.fetchjobs")) {
-		submodule_fetch_jobs_config = parse_submodule_fetchjobs(k, v);
-		return 0;
-	} else if (!strcmp(k, "fetch.recursesubmodules")) {
-		recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
-		return 0;
-	}
-
-	if (!strcmp(k, "fetch.parallel")) {
-		fetch_parallel_config = git_config_int(k, v);
-		if (fetch_parallel_config < 0)
-			die(_("fetch.parallel cannot be negative"));
-		return 0;
-	}
-
-	return git_default_config(k, v, cb);
-}
-
-static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
-{
-	BUG_ON_OPT_NEG(unset);
-
-	/*
-	 * "git fetch --refmap='' origin foo"
-	 * can be used to tell the command not to store anywhere
-	 */
-	refspec_append(&refmap, arg);
-
-	return 0;
-}
-
-static struct option builtin_fetch_options[] = {
-	OPT__VERBOSITY(&verbosity),
-	OPT_BOOL(0, "all", &all,
-		 N_("fetch from all remotes")),
-	OPT_BOOL(0, "set-upstream", &set_upstream,
-		 N_("set upstream for git pull/fetch")),
-	OPT_BOOL('a', "append", &append,
-		 N_("append to .git/FETCH_HEAD instead of overwriting")),
-	OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
-		   N_("path to upload pack on remote end")),
-	OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
-	OPT_BOOL('m', "multiple", &multiple,
-		 N_("fetch from multiple remotes")),
-	OPT_SET_INT('t', "tags", &tags,
-		    N_("fetch all tags and associated objects"), TAGS_SET),
-	OPT_SET_INT('n', NULL, &tags,
-		    N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
-	OPT_INTEGER('j', "jobs", &max_jobs,
-		    N_("number of submodules fetched in parallel")),
-	OPT_BOOL('p', "prune", &prune,
-		 N_("prune remote-tracking branches no longer on remote")),
-	OPT_BOOL('P', "prune-tags", &prune_tags,
-		 N_("prune local tags no longer on remote and clobber changed tags")),
-	OPT_CALLBACK_F(0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
-		    N_("control recursive fetching of submodules"),
-		    PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules),
-	OPT_BOOL(0, "dry-run", &dry_run,
-		 N_("dry run")),
-	OPT_BOOL(0, "write-fetch-head", &write_fetch_head,
-		 N_("write fetched references to the FETCH_HEAD file")),
-	OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
-	OPT_BOOL('u', "update-head-ok", &update_head_ok,
-		    N_("allow updating of HEAD ref")),
-	OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
-	OPT_STRING(0, "depth", &depth, N_("depth"),
-		   N_("deepen history of shallow clone")),
-	OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
-		   N_("deepen history of shallow repository based on time")),
-	OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
-			N_("deepen history of shallow clone, excluding rev")),
-	OPT_INTEGER(0, "deepen", &deepen_relative,
-		    N_("deepen history of shallow clone")),
-	OPT_SET_INT_F(0, "unshallow", &unshallow,
-		      N_("convert to a complete repository"),
-		      1, PARSE_OPT_NONEG),
-	{ OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
-		   N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
-	OPT_CALLBACK_F(0, "recurse-submodules-default",
-		   &recurse_submodules_default, N_("on-demand"),
-		   N_("default for recursive fetching of submodules "
-		      "(lower priority than config files)"),
-		   PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules),
-	OPT_BOOL(0, "update-shallow", &update_shallow,
-		 N_("accept refs that update .git/shallow")),
-	OPT_CALLBACK_F(0, "refmap", NULL, N_("refmap"),
-		       N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg),
-	OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
-	OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
-			TRANSPORT_FAMILY_IPV4),
-	OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
-			TRANSPORT_FAMILY_IPV6),
-	OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
-			N_("report that we have only objects reachable from this object")),
-	OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
-	OPT_BOOL(0, "auto-maintenance", &enable_auto_gc,
-		 N_("run 'maintenance --auto' after fetching")),
-	OPT_BOOL(0, "auto-gc", &enable_auto_gc,
-		 N_("run 'maintenance --auto' after fetching")),
-	OPT_BOOL(0, "show-forced-updates", &fetch_show_forced_updates,
-		 N_("check for forced-updates on all updated branches")),
-	OPT_BOOL(0, "write-commit-graph", &fetch_write_commit_graph,
-		 N_("write the commit-graph after fetching")),
-	OPT_BOOL(0, "stdin", &stdin_refspecs,
-		 N_("accept refspecs from stdin")),
-	OPT_END()
-};
-
-static void unlock_pack(void)
-{
-	if (gtransport)
-		transport_unlock_pack(gtransport);
-	if (gsecondary)
-		transport_unlock_pack(gsecondary);
-}
-
-static void unlock_pack_on_signal(int signo)
-{
-	unlock_pack();
-	sigchain_pop(signo);
-	raise(signo);
-}
-
-static void add_merge_config(struct ref **head,
-			   const struct ref *remote_refs,
-		           struct branch *branch,
-		           struct ref ***tail)
-{
-	int i;
-
-	for (i = 0; i < branch->merge_nr; i++) {
-		struct ref *rm, **old_tail = *tail;
-		struct refspec_item refspec;
-
-		for (rm = *head; rm; rm = rm->next) {
-			if (branch_merge_matches(branch, i, rm->name)) {
-				rm->fetch_head_status = FETCH_HEAD_MERGE;
-				break;
-			}
-		}
-		if (rm)
-			continue;
-
-		/*
-		 * Not fetched to a remote-tracking branch?  We need to fetch
-		 * it anyway to allow this branch's "branch.$name.merge"
-		 * to be honored by 'git pull', but we do not have to
-		 * fail if branch.$name.merge is misconfigured to point
-		 * at a nonexisting branch.  If we were indeed called by
-		 * 'git pull', it will notice the misconfiguration because
-		 * there is no entry in the resulting FETCH_HEAD marked
-		 * for merging.
-		 */
-		memset(&refspec, 0, sizeof(refspec));
-		refspec.src = branch->merge[i]->src;
-		get_fetch_map(remote_refs, &refspec, tail, 1);
-		for (rm = *old_tail; rm; rm = rm->next)
-			rm->fetch_head_status = FETCH_HEAD_MERGE;
-	}
-}
-
-static void create_fetch_oidset(struct ref **head, struct oidset *out)
-{
-	struct ref *rm = *head;
-	while (rm) {
-		oidset_insert(out, &rm->old_oid);
-		rm = rm->next;
-	}
-}
-
-struct refname_hash_entry {
-	struct hashmap_entry ent;
-	struct object_id oid;
-	int ignore;
-	char refname[FLEX_ARRAY];
-};
-
-static int refname_hash_entry_cmp(const void *hashmap_cmp_fn_data,
-				  const struct hashmap_entry *eptr,
-				  const struct hashmap_entry *entry_or_key,
-				  const void *keydata)
-{
-	const struct refname_hash_entry *e1, *e2;
-
-	e1 = container_of(eptr, const struct refname_hash_entry, ent);
-	e2 = container_of(entry_or_key, const struct refname_hash_entry, ent);
-	return strcmp(e1->refname, keydata ? keydata : e2->refname);
-}
-
-static struct refname_hash_entry *refname_hash_add(struct hashmap *map,
-						   const char *refname,
-						   const struct object_id *oid)
-{
-	struct refname_hash_entry *ent;
-	size_t len = strlen(refname);
-
-	FLEX_ALLOC_MEM(ent, refname, refname, len);
-	hashmap_entry_init(&ent->ent, strhash(refname));
-	oidcpy(&ent->oid, oid);
-	hashmap_add(map, &ent->ent);
-	return ent;
-}
-
-static int add_one_refname(const char *refname,
-			   const struct object_id *oid,
-			   int flag, void *cbdata)
-{
-	struct hashmap *refname_map = cbdata;
-
-	(void) refname_hash_add(refname_map, refname, oid);
-	return 0;
-}
-
-static void refname_hash_init(struct hashmap *map)
-{
-	hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
-}
-
-static int refname_hash_exists(struct hashmap *map, const char *refname)
-{
-	return !!hashmap_get_from_hash(map, strhash(refname), refname);
-}
-
-static void clear_item(struct refname_hash_entry *item)
-{
-	item->ignore = 1;
-}
-
-static void find_non_local_tags(const struct ref *refs,
-				struct ref **head,
-				struct ref ***tail)
-{
-	struct hashmap existing_refs;
-	struct hashmap remote_refs;
-	struct oidset fetch_oids = OIDSET_INIT;
-	struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
-	struct string_list_item *remote_ref_item;
-	const struct ref *ref;
-	struct refname_hash_entry *item = NULL;
-	const int quick_flags = OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT;
-
-	refname_hash_init(&existing_refs);
-	refname_hash_init(&remote_refs);
-	create_fetch_oidset(head, &fetch_oids);
-
-	for_each_ref(add_one_refname, &existing_refs);
-	for (ref = refs; ref; ref = ref->next) {
-		if (!starts_with(ref->name, "refs/tags/"))
-			continue;
-
-		/*
-		 * The peeled ref always follows the matching base
-		 * ref, so if we see a peeled ref that we don't want
-		 * to fetch then we can mark the ref entry in the list
-		 * as one to ignore by setting util to NULL.
-		 */
-		if (ends_with(ref->name, "^{}")) {
-			if (item &&
-			    !has_object_file_with_flags(&ref->old_oid, quick_flags) &&
-			    !oidset_contains(&fetch_oids, &ref->old_oid) &&
-			    !has_object_file_with_flags(&item->oid, quick_flags) &&
-			    !oidset_contains(&fetch_oids, &item->oid))
-				clear_item(item);
-			item = NULL;
-			continue;
-		}
-
-		/*
-		 * If item is non-NULL here, then we previously saw a
-		 * ref not followed by a peeled reference, so we need
-		 * to check if it is a lightweight tag that we want to
-		 * fetch.
-		 */
-		if (item &&
-		    !has_object_file_with_flags(&item->oid, quick_flags) &&
-		    !oidset_contains(&fetch_oids, &item->oid))
-			clear_item(item);
-
-		item = NULL;
-
-		/* skip duplicates and refs that we already have */
-		if (refname_hash_exists(&remote_refs, ref->name) ||
-		    refname_hash_exists(&existing_refs, ref->name))
-			continue;
-
-		item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
-		string_list_insert(&remote_refs_list, ref->name);
-	}
-	hashmap_free_entries(&existing_refs, struct refname_hash_entry, ent);
-
-	/*
-	 * We may have a final lightweight tag that needs to be
-	 * checked to see if it needs fetching.
-	 */
-	if (item &&
-	    !has_object_file_with_flags(&item->oid, quick_flags) &&
-	    !oidset_contains(&fetch_oids, &item->oid))
-		clear_item(item);
-
-	/*
-	 * For all the tags in the remote_refs_list,
-	 * add them to the list of refs to be fetched
-	 */
-	for_each_string_list_item(remote_ref_item, &remote_refs_list) {
-		const char *refname = remote_ref_item->string;
-		struct ref *rm;
-		unsigned int hash = strhash(refname);
-
-		item = hashmap_get_entry_from_hash(&remote_refs, hash, refname,
-					struct refname_hash_entry, ent);
-		if (!item)
-			BUG("unseen remote ref?");
-
-		/* Unless we have already decided to ignore this item... */
-		if (item->ignore)
-			continue;
-
-		rm = alloc_ref(item->refname);
-		rm->peer_ref = alloc_ref(item->refname);
-		oidcpy(&rm->old_oid, &item->oid);
-		**tail = rm;
-		*tail = &rm->next;
-	}
-	hashmap_free_entries(&remote_refs, struct refname_hash_entry, ent);
-	string_list_clear(&remote_refs_list, 0);
-	oidset_clear(&fetch_oids);
-}
-
-static struct ref *get_ref_map(struct remote *remote,
-			       const struct ref *remote_refs,
-			       struct refspec *rs,
-			       int tags, int *autotags)
-{
-	int i;
-	struct ref *rm;
-	struct ref *ref_map = NULL;
-	struct ref **tail = &ref_map;
-
-	/* opportunistically-updated references: */
-	struct ref *orefs = NULL, **oref_tail = &orefs;
-
-	struct hashmap existing_refs;
-	int existing_refs_populated = 0;
-
-	if (rs->nr) {
-		struct refspec *fetch_refspec;
-
-		for (i = 0; i < rs->nr; i++) {
-			get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
-			if (rs->items[i].dst && rs->items[i].dst[0])
-				*autotags = 1;
-		}
-		/* Merge everything on the command line (but not --tags) */
-		for (rm = ref_map; rm; rm = rm->next)
-			rm->fetch_head_status = FETCH_HEAD_MERGE;
-
-		/*
-		 * For any refs that we happen to be fetching via
-		 * command-line arguments, the destination ref might
-		 * have been missing or have been different than the
-		 * remote-tracking ref that would be derived from the
-		 * configured refspec.  In these cases, we want to
-		 * take the opportunity to update their configured
-		 * remote-tracking reference.  However, we do not want
-		 * to mention these entries in FETCH_HEAD at all, as
-		 * they would simply be duplicates of existing
-		 * entries, so we set them FETCH_HEAD_IGNORE below.
-		 *
-		 * We compute these entries now, based only on the
-		 * refspecs specified on the command line.  But we add
-		 * them to the list following the refspecs resulting
-		 * from the tags option so that one of the latter,
-		 * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
-		 * by ref_remove_duplicates() in favor of one of these
-		 * opportunistic entries with FETCH_HEAD_IGNORE.
-		 */
-		if (refmap.nr)
-			fetch_refspec = &refmap;
-		else
-			fetch_refspec = &remote->fetch;
-
-		for (i = 0; i < fetch_refspec->nr; i++)
-			get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
-	} else if (refmap.nr) {
-		die("--refmap option is only meaningful with command-line refspec(s).");
-	} else {
-		/* Use the defaults */
-		struct branch *branch = branch_get(NULL);
-		int has_merge = branch_has_merge_config(branch);
-		if (remote &&
-		    (remote->fetch.nr ||
-		     /* Note: has_merge implies non-NULL branch->remote_name */
-		     (has_merge && !strcmp(branch->remote_name, remote->name)))) {
-			for (i = 0; i < remote->fetch.nr; i++) {
-				get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
-				if (remote->fetch.items[i].dst &&
-				    remote->fetch.items[i].dst[0])
-					*autotags = 1;
-				if (!i && !has_merge && ref_map &&
-				    !remote->fetch.items[0].pattern)
-					ref_map->fetch_head_status = FETCH_HEAD_MERGE;
-			}
-			/*
-			 * if the remote we're fetching from is the same
-			 * as given in branch.<name>.remote, we add the
-			 * ref given in branch.<name>.merge, too.
-			 *
-			 * Note: has_merge implies non-NULL branch->remote_name
-			 */
-			if (has_merge &&
-			    !strcmp(branch->remote_name, remote->name))
-				add_merge_config(&ref_map, remote_refs, branch, &tail);
-		} else {
-			ref_map = get_remote_ref(remote_refs, "HEAD");
-			if (!ref_map)
-				die(_("Couldn't find remote ref HEAD"));
-			ref_map->fetch_head_status = FETCH_HEAD_MERGE;
-			tail = &ref_map->next;
-		}
-	}
-
-	if (tags == TAGS_SET)
-		/* also fetch all tags */
-		get_fetch_map(remote_refs, tag_refspec, &tail, 0);
-	else if (tags == TAGS_DEFAULT && *autotags)
-		find_non_local_tags(remote_refs, &ref_map, &tail);
-
-	/* Now append any refs to be updated opportunistically: */
-	*tail = orefs;
-	for (rm = orefs; rm; rm = rm->next) {
-		rm->fetch_head_status = FETCH_HEAD_IGNORE;
-		tail = &rm->next;
-	}
-
-	/*
-	 * apply negative refspecs first, before we remove duplicates. This is
-	 * necessary as negative refspecs might remove an otherwise conflicting
-	 * duplicate.
-	 */
-	if (rs->nr)
-		ref_map = apply_negative_refspecs(ref_map, rs);
-	else
-		ref_map = apply_negative_refspecs(ref_map, &remote->fetch);
-
-	ref_map = ref_remove_duplicates(ref_map);
-
-	for (rm = ref_map; rm; rm = rm->next) {
-		if (rm->peer_ref) {
-			const char *refname = rm->peer_ref->name;
-			struct refname_hash_entry *peer_item;
-			unsigned int hash = strhash(refname);
-
-			if (!existing_refs_populated) {
-				refname_hash_init(&existing_refs);
-				for_each_ref(add_one_refname, &existing_refs);
-				existing_refs_populated = 1;
-			}
-
-			peer_item = hashmap_get_entry_from_hash(&existing_refs,
-						hash, refname,
-						struct refname_hash_entry, ent);
-			if (peer_item) {
-				struct object_id *old_oid = &peer_item->oid;
-				oidcpy(&rm->peer_ref->old_oid, old_oid);
-			}
-		}
-	}
-	if (existing_refs_populated)
-		hashmap_free_entries(&existing_refs, struct refname_hash_entry, ent);
-
-	return ref_map;
-}
-
-#define STORE_REF_ERROR_OTHER 1
-#define STORE_REF_ERROR_DF_CONFLICT 2
-
-static int s_update_ref(const char *action,
-			struct ref *ref,
-			int check_old)
-{
-	char *msg;
-	char *rla = getenv("GIT_REFLOG_ACTION");
-	struct ref_transaction *transaction;
-	struct strbuf err = STRBUF_INIT;
-	int ret, df_conflict = 0;
-
-	if (dry_run)
-		return 0;
-	if (!rla)
-		rla = default_rla.buf;
-	msg = xstrfmt("%s: %s", rla, action);
-
-	transaction = ref_transaction_begin(&err);
-	if (!transaction ||
-	    ref_transaction_update(transaction, ref->name,
-				   &ref->new_oid,
-				   check_old ? &ref->old_oid : NULL,
-				   0, msg, &err))
-		goto fail;
-
-	ret = ref_transaction_commit(transaction, &err);
-	if (ret) {
-		df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
-		goto fail;
-	}
-
-	ref_transaction_free(transaction);
-	strbuf_release(&err);
-	free(msg);
-	return 0;
-fail:
-	ref_transaction_free(transaction);
-	error("%s", err.buf);
-	strbuf_release(&err);
-	free(msg);
-	return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
-			   : STORE_REF_ERROR_OTHER;
-}
-
-static int refcol_width = 10;
-static int compact_format;
-
-static void adjust_refcol_width(const struct ref *ref)
-{
-	int max, rlen, llen, len;
-
-	/* uptodate lines are only shown on high verbosity level */
-	if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
-		return;
-
-	max    = term_columns();
-	rlen   = utf8_strwidth(prettify_refname(ref->name));
-
-	llen   = utf8_strwidth(prettify_refname(ref->peer_ref->name));
-
-	/*
-	 * rough estimation to see if the output line is too long and
-	 * should not be counted (we can't do precise calculation
-	 * anyway because we don't know if the error explanation part
-	 * will be printed in update_local_ref)
-	 */
-	if (compact_format) {
-		llen = 0;
-		max = max * 2 / 3;
-	}
-	len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
-	if (len >= max)
-		return;
-
-	/*
-	 * Not precise calculation for compact mode because '*' can
-	 * appear on the left hand side of '->' and shrink the column
-	 * back.
-	 */
-	if (refcol_width < rlen)
-		refcol_width = rlen;
-}
-
-static void prepare_format_display(struct ref *ref_map)
-{
-	struct ref *rm;
-	const char *format = "full";
-
-	git_config_get_string_tmp("fetch.output", &format);
-	if (!strcasecmp(format, "full"))
-		compact_format = 0;
-	else if (!strcasecmp(format, "compact"))
-		compact_format = 1;
-	else
-		die(_("configuration fetch.output contains invalid value %s"),
-		    format);
-
-	for (rm = ref_map; rm; rm = rm->next) {
-		if (rm->status == REF_STATUS_REJECT_SHALLOW ||
-		    !rm->peer_ref ||
-		    !strcmp(rm->name, "HEAD"))
-			continue;
-
-		adjust_refcol_width(rm);
-	}
-}
-
-static void print_remote_to_local(struct strbuf *display,
-				  const char *remote, const char *local)
-{
-	strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
-}
-
-static int find_and_replace(struct strbuf *haystack,
-			    const char *needle,
-			    const char *placeholder)
-{
-	const char *p = NULL;
-	int plen, nlen;
-
-	nlen = strlen(needle);
-	if (ends_with(haystack->buf, needle))
-		p = haystack->buf + haystack->len - nlen;
-	else
-		p = strstr(haystack->buf, needle);
-	if (!p)
-		return 0;
-
-	if (p > haystack->buf && p[-1] != '/')
-		return 0;
-
-	plen = strlen(p);
-	if (plen > nlen && p[nlen] != '/')
-		return 0;
-
-	strbuf_splice(haystack, p - haystack->buf, nlen,
-		      placeholder, strlen(placeholder));
-	return 1;
-}
-
-static void print_compact(struct strbuf *display,
-			  const char *remote, const char *local)
-{
-	struct strbuf r = STRBUF_INIT;
-	struct strbuf l = STRBUF_INIT;
-
-	if (!strcmp(remote, local)) {
-		strbuf_addf(display, "%-*s -> *", refcol_width, remote);
-		return;
-	}
-
-	strbuf_addstr(&r, remote);
-	strbuf_addstr(&l, local);
-
-	if (!find_and_replace(&r, local, "*"))
-		find_and_replace(&l, remote, "*");
-	print_remote_to_local(display, r.buf, l.buf);
-
-	strbuf_release(&r);
-	strbuf_release(&l);
-}
-
-static void format_display(struct strbuf *display, char code,
-			   const char *summary, const char *error,
-			   const char *remote, const char *local,
-			   int summary_width)
-{
-	int width = (summary_width + strlen(summary) - gettext_width(summary));
-
-	strbuf_addf(display, "%c %-*s ", code, width, summary);
-	if (!compact_format)
-		print_remote_to_local(display, remote, local);
-	else
-		print_compact(display, remote, local);
-	if (error)
-		strbuf_addf(display, "  (%s)", error);
-}
-
-static int update_local_ref(struct ref *ref,
-			    const char *remote,
-			    const struct ref *remote_ref,
-			    struct strbuf *display,
-			    int summary_width)
-{
-	struct commit *current = NULL, *updated;
-	enum object_type type;
-	struct branch *current_branch = branch_get(NULL);
-	const char *pretty_ref = prettify_refname(ref->name);
-	int fast_forward = 0;
-
-	type = oid_object_info(the_repository, &ref->new_oid, NULL);
-	if (type < 0)
-		die(_("object %s not found"), oid_to_hex(&ref->new_oid));
-
-	if (oideq(&ref->old_oid, &ref->new_oid)) {
-		if (verbosity > 0)
-			format_display(display, '=', _("[up to date]"), NULL,
-				       remote, pretty_ref, summary_width);
-		return 0;
-	}
-
-	if (current_branch &&
-	    !strcmp(ref->name, current_branch->name) &&
-	    !(update_head_ok || is_bare_repository()) &&
-	    !is_null_oid(&ref->old_oid)) {
-		/*
-		 * If this is the head, and it's not okay to update
-		 * the head, and the old value of the head isn't empty...
-		 */
-		format_display(display, '!', _("[rejected]"),
-			       _("can't fetch in current branch"),
-			       remote, pretty_ref, summary_width);
-		return 1;
-	}
-
-	if (!is_null_oid(&ref->old_oid) &&
-	    starts_with(ref->name, "refs/tags/")) {
-		if (force || ref->force) {
-			int r;
-			r = s_update_ref("updating tag", ref, 0);
-			format_display(display, r ? '!' : 't', _("[tag update]"),
-				       r ? _("unable to update local ref") : NULL,
-				       remote, pretty_ref, summary_width);
-			return r;
-		} else {
-			format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
-				       remote, pretty_ref, summary_width);
-			return 1;
-		}
-	}
-
-	current = lookup_commit_reference_gently(the_repository,
-						 &ref->old_oid, 1);
-	updated = lookup_commit_reference_gently(the_repository,
-						 &ref->new_oid, 1);
-	if (!current || !updated) {
-		const char *msg;
-		const char *what;
-		int r;
-		/*
-		 * Nicely describe the new ref we're fetching.
-		 * Base this on the remote's ref name, as it's
-		 * more likely to follow a standard layout.
-		 */
-		const char *name = remote_ref ? remote_ref->name : "";
-		if (starts_with(name, "refs/tags/")) {
-			msg = "storing tag";
-			what = _("[new tag]");
-		} else if (starts_with(name, "refs/heads/")) {
-			msg = "storing head";
-			what = _("[new branch]");
-		} else {
-			msg = "storing ref";
-			what = _("[new ref]");
-		}
-
-		r = s_update_ref(msg, ref, 0);
-		format_display(display, r ? '!' : '*', what,
-			       r ? _("unable to update local ref") : NULL,
-			       remote, pretty_ref, summary_width);
-		return r;
-	}
-
-	if (fetch_show_forced_updates) {
-		uint64_t t_before = getnanotime();
-		fast_forward = in_merge_bases(current, updated);
-		forced_updates_ms += (getnanotime() - t_before) / 1000000;
-	} else {
-		fast_forward = 1;
-	}
-
-	if (fast_forward) {
-		struct strbuf quickref = STRBUF_INIT;
-		int r;
-
-		strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
-		strbuf_addstr(&quickref, "..");
-		strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
-		r = s_update_ref("fast-forward", ref, 1);
-		format_display(display, r ? '!' : ' ', quickref.buf,
-			       r ? _("unable to update local ref") : NULL,
-			       remote, pretty_ref, summary_width);
-		strbuf_release(&quickref);
-		return r;
-	} else if (force || ref->force) {
-		struct strbuf quickref = STRBUF_INIT;
-		int r;
-		strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
-		strbuf_addstr(&quickref, "...");
-		strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
-		r = s_update_ref("forced-update", ref, 1);
-		format_display(display, r ? '!' : '+', quickref.buf,
-			       r ? _("unable to update local ref") : _("forced update"),
-			       remote, pretty_ref, summary_width);
-		strbuf_release(&quickref);
-		return r;
-	} else {
-		format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
-			       remote, pretty_ref, summary_width);
-		return 1;
-	}
-}
-
-static int iterate_ref_map(void *cb_data, struct object_id *oid)
-{
-	struct ref **rm = cb_data;
-	struct ref *ref = *rm;
-
-	while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
-		ref = ref->next;
-	if (!ref)
-		return -1; /* end of the list */
-	*rm = ref->next;
-	oidcpy(oid, &ref->old_oid);
-	return 0;
-}
-
-static const char warn_show_forced_updates[] =
-N_("Fetch normally indicates which branches had a forced update,\n"
-   "but that check has been disabled. To re-enable, use '--show-forced-updates'\n"
-   "flag or run 'git config fetch.showForcedUpdates true'.");
-static const char warn_time_show_forced_updates[] =
-N_("It took %.2f seconds to check forced updates. You can use\n"
-   "'--no-show-forced-updates' or run 'git config fetch.showForcedUpdates false'\n"
-   " to avoid this check.\n");
-
-static int store_updated_refs(const char *raw_url, const char *remote_name,
-			      int connectivity_checked, struct ref *ref_map)
-{
-	FILE *fp;
-	struct commit *commit;
-	int url_len, i, rc = 0;
-	struct strbuf note = STRBUF_INIT;
-	const char *what, *kind;
-	struct ref *rm;
-	char *url;
-	const char *filename = (!write_fetch_head
-				? "/dev/null"
-				: git_path_fetch_head(the_repository));
-	int want_status;
-	int summary_width = transport_summary_width(ref_map);
-
-	fp = fopen(filename, "a");
-	if (!fp)
-		return error_errno(_("cannot open %s"), filename);
-
-	if (raw_url)
-		url = transport_anonymize_url(raw_url);
-	else
-		url = xstrdup("foreign");
-
-	if (!connectivity_checked) {
-		struct check_connected_options opt = CHECK_CONNECTED_INIT;
-
-		rm = ref_map;
-		if (check_connected(iterate_ref_map, &rm, &opt)) {
-			rc = error(_("%s did not send all necessary objects\n"), url);
-			goto abort;
-		}
-	}
-
-	prepare_format_display(ref_map);
-
-	/*
-	 * We do a pass for each fetch_head_status type in their enum order, so
-	 * merged entries are written before not-for-merge. That lets readers
-	 * use FETCH_HEAD as a refname to refer to the ref to be merged.
-	 */
-	for (want_status = FETCH_HEAD_MERGE;
-	     want_status <= FETCH_HEAD_IGNORE;
-	     want_status++) {
-		for (rm = ref_map; rm; rm = rm->next) {
-			struct ref *ref = NULL;
-			const char *merge_status_marker = "";
-
-			if (rm->status == REF_STATUS_REJECT_SHALLOW) {
-				if (want_status == FETCH_HEAD_MERGE)
-					warning(_("reject %s because shallow roots are not allowed to be updated"),
-						rm->peer_ref ? rm->peer_ref->name : rm->name);
-				continue;
-			}
-
-			commit = lookup_commit_reference_gently(the_repository,
-								&rm->old_oid,
-								1);
-			if (!commit)
-				rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
-
-			if (rm->fetch_head_status != want_status)
-				continue;
-
-			if (rm->peer_ref) {
-				ref = alloc_ref(rm->peer_ref->name);
-				oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
-				oidcpy(&ref->new_oid, &rm->old_oid);
-				ref->force = rm->peer_ref->force;
-			}
-
-			if (recurse_submodules != RECURSE_SUBMODULES_OFF &&
-			    (!rm->peer_ref || !oideq(&ref->old_oid, &ref->new_oid))) {
-				check_for_new_submodule_commits(&rm->old_oid);
-			}
-
-			if (!strcmp(rm->name, "HEAD")) {
-				kind = "";
-				what = "";
-			}
-			else if (skip_prefix(rm->name, "refs/heads/", &what))
-				kind = "branch";
-			else if (skip_prefix(rm->name, "refs/tags/", &what))
-				kind = "tag";
-			else if (skip_prefix(rm->name, "refs/remotes/", &what))
-				kind = "remote-tracking branch";
-			else {
-				kind = "";
-				what = rm->name;
-			}
-
-			url_len = strlen(url);
-			for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
-				;
-			url_len = i + 1;
-			if (4 < i && !strncmp(".git", url + i - 3, 4))
-				url_len = i - 3;
-
-			strbuf_reset(&note);
-			if (*what) {
-				if (*kind)
-					strbuf_addf(&note, "%s ", kind);
-				strbuf_addf(&note, "'%s' of ", what);
-			}
-			switch (rm->fetch_head_status) {
-			case FETCH_HEAD_NOT_FOR_MERGE:
-				merge_status_marker = "not-for-merge";
-				/* fall-through */
-			case FETCH_HEAD_MERGE:
-				fprintf(fp, "%s\t%s\t%s",
-					oid_to_hex(&rm->old_oid),
-					merge_status_marker,
-					note.buf);
-				for (i = 0; i < url_len; ++i)
-					if ('\n' == url[i])
-						fputs("\\n", fp);
-					else
-						fputc(url[i], fp);
-				fputc('\n', fp);
-				break;
-			default:
-				/* do not write anything to FETCH_HEAD */
-				break;
-			}
-
-			strbuf_reset(&note);
-			if (ref) {
-				rc |= update_local_ref(ref, what, rm, &note,
-						       summary_width);
-				free(ref);
-			} else if (write_fetch_head || dry_run) {
-				/*
-				 * Display fetches written to FETCH_HEAD (or
-				 * would be written to FETCH_HEAD, if --dry-run
-				 * is set).
-				 */
-				format_display(&note, '*',
-					       *kind ? kind : "branch", NULL,
-					       *what ? what : "HEAD",
-					       "FETCH_HEAD", summary_width);
-			}
-			if (note.len) {
-				if (verbosity >= 0 && !shown_url) {
-					fprintf(stderr, _("From %.*s\n"),
-							url_len, url);
-					shown_url = 1;
-				}
-				if (verbosity >= 0)
-					fprintf(stderr, " %s\n", note.buf);
-			}
-		}
-	}
-
-	if (rc & STORE_REF_ERROR_DF_CONFLICT)
-		error(_("some local refs could not be updated; try running\n"
-		      " 'git remote prune %s' to remove any old, conflicting "
-		      "branches"), remote_name);
-
-	if (advice_fetch_show_forced_updates) {
-		if (!fetch_show_forced_updates) {
-			warning(_(warn_show_forced_updates));
-		} else if (forced_updates_ms > FORCED_UPDATES_DELAY_WARNING_IN_MS) {
-			warning(_(warn_time_show_forced_updates),
-				forced_updates_ms / 1000.0);
-		}
-	}
-
- abort:
-	strbuf_release(&note);
-	free(url);
-	fclose(fp);
-	return rc;
-}
-
-/*
- * We would want to bypass the object transfer altogether if
- * everything we are going to fetch already exists and is connected
- * locally.
- */
-static int check_exist_and_connected(struct ref *ref_map)
-{
-	struct ref *rm = ref_map;
-	struct check_connected_options opt = CHECK_CONNECTED_INIT;
-	struct ref *r;
-
-	/*
-	 * If we are deepening a shallow clone we already have these
-	 * objects reachable.  Running rev-list here will return with
-	 * a good (0) exit status and we'll bypass the fetch that we
-	 * really need to perform.  Claiming failure now will ensure
-	 * we perform the network exchange to deepen our history.
-	 */
-	if (deepen)
-		return -1;
-
-	/*
-	 * check_connected() allows objects to merely be promised, but
-	 * we need all direct targets to exist.
-	 */
-	for (r = rm; r; r = r->next) {
-		if (!has_object_file_with_flags(&r->old_oid,
-						OBJECT_INFO_SKIP_FETCH_OBJECT))
-			return -1;
-	}
-
-	opt.quiet = 1;
-	return check_connected(iterate_ref_map, &rm, &opt);
-}
-
-static int fetch_refs(struct transport *transport, struct ref *ref_map)
-{
-	int ret = check_exist_and_connected(ref_map);
-	if (ret) {
-		trace2_region_enter("fetch", "fetch_refs", the_repository);
-		ret = transport_fetch_refs(transport, ref_map);
-		trace2_region_leave("fetch", "fetch_refs", the_repository);
-	}
-	if (!ret)
-		/*
-		 * Keep the new pack's ".keep" file around to allow the caller
-		 * time to update refs to reference the new objects.
-		 */
-		return 0;
-	transport_unlock_pack(transport);
-	return ret;
-}
-
-/* Update local refs based on the ref values fetched from a remote */
-static int consume_refs(struct transport *transport, struct ref *ref_map)
-{
-	int connectivity_checked = transport->smart_options
-		? transport->smart_options->connectivity_checked : 0;
-	int ret;
-	trace2_region_enter("fetch", "consume_refs", the_repository);
-	ret = store_updated_refs(transport->url,
-				 transport->remote->name,
-				 connectivity_checked,
-				 ref_map);
-	transport_unlock_pack(transport);
-	trace2_region_leave("fetch", "consume_refs", the_repository);
-	return ret;
-}
-
-static int prune_refs(struct refspec *rs, struct ref *ref_map,
-		      const char *raw_url)
-{
-	int url_len, i, result = 0;
-	struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
-	char *url;
-	int summary_width = transport_summary_width(stale_refs);
-	const char *dangling_msg = dry_run
-		? _("   (%s will become dangling)")
-		: _("   (%s has become dangling)");
-
-	if (raw_url)
-		url = transport_anonymize_url(raw_url);
-	else
-		url = xstrdup("foreign");
-
-	url_len = strlen(url);
-	for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
-		;
-
-	url_len = i + 1;
-	if (4 < i && !strncmp(".git", url + i - 3, 4))
-		url_len = i - 3;
-
-	if (!dry_run) {
-		struct string_list refnames = STRING_LIST_INIT_NODUP;
-
-		for (ref = stale_refs; ref; ref = ref->next)
-			string_list_append(&refnames, ref->name);
-
-		result = delete_refs("fetch: prune", &refnames, 0);
-		string_list_clear(&refnames, 0);
-	}
-
-	if (verbosity >= 0) {
-		for (ref = stale_refs; ref; ref = ref->next) {
-			struct strbuf sb = STRBUF_INIT;
-			if (!shown_url) {
-				fprintf(stderr, _("From %.*s\n"), url_len, url);
-				shown_url = 1;
-			}
-			format_display(&sb, '-', _("[deleted]"), NULL,
-				       _("(none)"), prettify_refname(ref->name),
-				       summary_width);
-			fprintf(stderr, " %s\n",sb.buf);
-			strbuf_release(&sb);
-			warn_dangling_symref(stderr, dangling_msg, ref->name);
-		}
-	}
-
-	free(url);
-	free_refs(stale_refs);
-	return result;
-}
-
-static void check_not_current_branch(struct ref *ref_map)
-{
-	struct branch *current_branch = branch_get(NULL);
-
-	if (is_bare_repository() || !current_branch)
-		return;
-
-	for (; ref_map; ref_map = ref_map->next)
-		if (ref_map->peer_ref && !strcmp(current_branch->refname,
-					ref_map->peer_ref->name))
-			die(_("Refusing to fetch into current branch %s "
-			    "of non-bare repository"), current_branch->refname);
-}
-
-static int truncate_fetch_head(void)
-{
-	const char *filename = git_path_fetch_head(the_repository);
-	FILE *fp = fopen_for_writing(filename);
-
-	if (!fp)
-		return error_errno(_("cannot open %s"), filename);
-	fclose(fp);
-	return 0;
-}
-
-static void set_option(struct transport *transport, const char *name, const char *value)
-{
-	int r = transport_set_option(transport, name, value);
-	if (r < 0)
-		die(_("Option \"%s\" value \"%s\" is not valid for %s"),
-		    name, value, transport->url);
-	if (r > 0)
-		warning(_("Option \"%s\" is ignored for %s\n"),
-			name, transport->url);
-}
-
-
-static int add_oid(const char *refname, const struct object_id *oid, int flags,
-		   void *cb_data)
-{
-	struct oid_array *oids = cb_data;
-
-	oid_array_append(oids, oid);
-	return 0;
-}
-
-static void add_negotiation_tips(struct git_transport_options *smart_options)
-{
-	struct oid_array *oids = xcalloc(1, sizeof(*oids));
-	int i;
-
-	for (i = 0; i < negotiation_tip.nr; i++) {
-		const char *s = negotiation_tip.items[i].string;
-		int old_nr;
-		if (!has_glob_specials(s)) {
-			struct object_id oid;
-			if (get_oid(s, &oid))
-				die("%s is not a valid object", s);
-			oid_array_append(oids, &oid);
-			continue;
-		}
-		old_nr = oids->nr;
-		for_each_glob_ref(add_oid, s, oids);
-		if (old_nr == oids->nr)
-			warning("Ignoring --negotiation-tip=%s because it does not match any refs",
-				s);
-	}
-	smart_options->negotiation_tips = oids;
-}
-
-static struct transport *prepare_transport(struct remote *remote, int deepen)
-{
-	struct transport *transport;
-
-	transport = transport_get(remote, NULL);
-	transport_set_verbosity(transport, verbosity, progress);
-	transport->family = family;
-	if (upload_pack)
-		set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
-	if (keep)
-		set_option(transport, TRANS_OPT_KEEP, "yes");
-	if (depth)
-		set_option(transport, TRANS_OPT_DEPTH, depth);
-	if (deepen && deepen_since)
-		set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
-	if (deepen && deepen_not.nr)
-		set_option(transport, TRANS_OPT_DEEPEN_NOT,
-			   (const char *)&deepen_not);
-	if (deepen_relative)
-		set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
-	if (update_shallow)
-		set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
-	if (filter_options.choice) {
-		const char *spec =
-			expand_list_objects_filter_spec(&filter_options);
-		set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER, spec);
-		set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
-	}
-	if (negotiation_tip.nr) {
-		if (transport->smart_options)
-			add_negotiation_tips(transport->smart_options);
-		else
-			warning("Ignoring --negotiation-tip because the protocol does not support it.");
-	}
-	return transport;
-}
-
-static void backfill_tags(struct transport *transport, struct ref *ref_map)
-{
-	int cannot_reuse;
-
-	/*
-	 * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
-	 * when remote helper is used (setting it to an empty string
-	 * is not unsetting). We could extend the remote helper
-	 * protocol for that, but for now, just force a new connection
-	 * without deepen-since. Similar story for deepen-not.
-	 */
-	cannot_reuse = transport->cannot_reuse ||
-		deepen_since || deepen_not.nr;
-	if (cannot_reuse) {
-		gsecondary = prepare_transport(transport->remote, 0);
-		transport = gsecondary;
-	}
-
-	transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
-	transport_set_option(transport, TRANS_OPT_DEPTH, "0");
-	transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
-	if (!fetch_refs(transport, ref_map))
-		consume_refs(transport, ref_map);
-
-	if (gsecondary) {
-		transport_disconnect(gsecondary);
-		gsecondary = NULL;
-	}
-}
-
-static int do_fetch(struct transport *transport,
-		    struct refspec *rs)
-{
-	struct ref *ref_map;
-	int autotags = (transport->remote->fetch_tags == 1);
-	int retcode = 0;
-	const struct ref *remote_refs;
-	struct strvec ref_prefixes = STRVEC_INIT;
-	int must_list_refs = 1;
-
-	if (tags == TAGS_DEFAULT) {
-		if (transport->remote->fetch_tags == 2)
-			tags = TAGS_SET;
-		if (transport->remote->fetch_tags == -1)
-			tags = TAGS_UNSET;
-	}
-
-	/* if not appending, truncate FETCH_HEAD */
-	if (!append && write_fetch_head) {
-		retcode = truncate_fetch_head();
-		if (retcode)
-			goto cleanup;
-	}
-
-	if (rs->nr) {
-		int i;
-
-		refspec_ref_prefixes(rs, &ref_prefixes);
-
-		/*
-		 * We can avoid listing refs if all of them are exact
-		 * OIDs
-		 */
-		must_list_refs = 0;
-		for (i = 0; i < rs->nr; i++) {
-			if (!rs->items[i].exact_sha1) {
-				must_list_refs = 1;
-				break;
-			}
-		}
-	} else if (transport->remote && transport->remote->fetch.nr)
-		refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
-
-	if (tags == TAGS_SET || tags == TAGS_DEFAULT) {
-		must_list_refs = 1;
-		if (ref_prefixes.nr)
-			strvec_push(&ref_prefixes, "refs/tags/");
-	}
-
-	if (must_list_refs) {
-		trace2_region_enter("fetch", "remote_refs", the_repository);
-		remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
-		trace2_region_leave("fetch", "remote_refs", the_repository);
-	} else
-		remote_refs = NULL;
-
-	strvec_clear(&ref_prefixes);
-
-	ref_map = get_ref_map(transport->remote, remote_refs, rs,
-			      tags, &autotags);
-	if (!update_head_ok)
-		check_not_current_branch(ref_map);
-
-	if (tags == TAGS_DEFAULT && autotags)
-		transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
-	if (prune) {
-		/*
-		 * We only prune based on refspecs specified
-		 * explicitly (via command line or configuration); we
-		 * don't care whether --tags was specified.
-		 */
-		if (rs->nr) {
-			prune_refs(rs, ref_map, transport->url);
-		} else {
-			prune_refs(&transport->remote->fetch,
-				   ref_map,
-				   transport->url);
-		}
-	}
-	if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
-		free_refs(ref_map);
-		retcode = 1;
-		goto cleanup;
-	}
-
-	if (set_upstream) {
-		struct branch *branch = branch_get("HEAD");
-		struct ref *rm;
-		struct ref *source_ref = NULL;
-
-		/*
-		 * We're setting the upstream configuration for the
-		 * current branch. The relevant upstream is the
-		 * fetched branch that is meant to be merged with the
-		 * current one, i.e. the one fetched to FETCH_HEAD.
-		 *
-		 * When there are several such branches, consider the
-		 * request ambiguous and err on the safe side by doing
-		 * nothing and just emit a warning.
-		 */
-		for (rm = ref_map; rm; rm = rm->next) {
-			if (!rm->peer_ref) {
-				if (source_ref) {
-					warning(_("multiple branches detected, incompatible with --set-upstream"));
-					goto skip;
-				} else {
-					source_ref = rm;
-				}
-			}
-		}
-		if (source_ref) {
-			if (!strcmp(source_ref->name, "HEAD") ||
-			    starts_with(source_ref->name, "refs/heads/"))
-				install_branch_config(0,
-						      branch->name,
-						      transport->remote->name,
-						      source_ref->name);
-			else if (starts_with(source_ref->name, "refs/remotes/"))
-				warning(_("not setting upstream for a remote remote-tracking branch"));
-			else if (starts_with(source_ref->name, "refs/tags/"))
-				warning(_("not setting upstream for a remote tag"));
-			else
-				warning(_("unknown branch type"));
-		} else {
-			warning(_("no source branch found.\n"
-				"you need to specify exactly one branch with the --set-upstream option."));
-		}
-	}
- skip:
-	free_refs(ref_map);
-
-	/* if neither --no-tags nor --tags was specified, do automated tag
-	 * following ... */
-	if (tags == TAGS_DEFAULT && autotags) {
-		struct ref **tail = &ref_map;
-		ref_map = NULL;
-		find_non_local_tags(remote_refs, &ref_map, &tail);
-		if (ref_map)
-			backfill_tags(transport, ref_map);
-		free_refs(ref_map);
-	}
-
- cleanup:
-	return retcode;
-}
-
-static int get_one_remote_for_fetch(struct remote *remote, void *priv)
-{
-	struct string_list *list = priv;
-	if (!remote->skip_default_update)
-		string_list_append(list, remote->name);
-	return 0;
-}
-
-struct remote_group_data {
-	const char *name;
-	struct string_list *list;
-};
-
-static int get_remote_group(const char *key, const char *value, void *priv)
-{
-	struct remote_group_data *g = priv;
-
-	if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
-		/* split list by white space */
-		while (*value) {
-			size_t wordlen = strcspn(value, " \t\n");
-
-			if (wordlen >= 1)
-				string_list_append_nodup(g->list,
-						   xstrndup(value, wordlen));
-			value += wordlen + (value[wordlen] != '\0');
-		}
-	}
-
-	return 0;
-}
-
-static int add_remote_or_group(const char *name, struct string_list *list)
-{
-	int prev_nr = list->nr;
-	struct remote_group_data g;
-	g.name = name; g.list = list;
-
-	git_config(get_remote_group, &g);
-	if (list->nr == prev_nr) {
-		struct remote *remote = remote_get(name);
-		if (!remote_is_configured(remote, 0))
-			return 0;
-		string_list_append(list, remote->name);
-	}
-	return 1;
-}
-
-static void add_options_to_argv(struct strvec *argv)
-{
-	if (dry_run)
-		strvec_push(argv, "--dry-run");
-	if (prune != -1)
-		strvec_push(argv, prune ? "--prune" : "--no-prune");
-	if (prune_tags != -1)
-		strvec_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
-	if (update_head_ok)
-		strvec_push(argv, "--update-head-ok");
-	if (force)
-		strvec_push(argv, "--force");
-	if (keep)
-		strvec_push(argv, "--keep");
-	if (recurse_submodules == RECURSE_SUBMODULES_ON)
-		strvec_push(argv, "--recurse-submodules");
-	else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
-		strvec_push(argv, "--recurse-submodules=on-demand");
-	if (tags == TAGS_SET)
-		strvec_push(argv, "--tags");
-	else if (tags == TAGS_UNSET)
-		strvec_push(argv, "--no-tags");
-	if (verbosity >= 2)
-		strvec_push(argv, "-v");
-	if (verbosity >= 1)
-		strvec_push(argv, "-v");
-	else if (verbosity < 0)
-		strvec_push(argv, "-q");
-	if (family == TRANSPORT_FAMILY_IPV4)
-		strvec_push(argv, "--ipv4");
-	else if (family == TRANSPORT_FAMILY_IPV6)
-		strvec_push(argv, "--ipv6");
-}
-
-/* Fetch multiple remotes in parallel */
-
-struct parallel_fetch_state {
-	const char **argv;
-	struct string_list *remotes;
-	int next, result;
-};
-
-static int fetch_next_remote(struct child_process *cp, struct strbuf *out,
-			     void *cb, void **task_cb)
-{
-	struct parallel_fetch_state *state = cb;
-	char *remote;
-
-	if (state->next < 0 || state->next >= state->remotes->nr)
-		return 0;
-
-	remote = state->remotes->items[state->next++].string;
-	*task_cb = remote;
-
-	strvec_pushv(&cp->args, state->argv);
-	strvec_push(&cp->args, remote);
-	cp->git_cmd = 1;
-
-	if (verbosity >= 0)
-		printf(_("Fetching %s\n"), remote);
-
-	return 1;
-}
-
-static int fetch_failed_to_start(struct strbuf *out, void *cb, void *task_cb)
-{
-	struct parallel_fetch_state *state = cb;
-	const char *remote = task_cb;
-
-	state->result = error(_("Could not fetch %s"), remote);
-
-	return 0;
-}
-
-static int fetch_finished(int result, struct strbuf *out,
-			  void *cb, void *task_cb)
-{
-	struct parallel_fetch_state *state = cb;
-	const char *remote = task_cb;
-
-	if (result) {
-		strbuf_addf(out, _("could not fetch '%s' (exit code: %d)\n"),
-			    remote, result);
-		state->result = -1;
-	}
-
-	return 0;
-}
-
-static int fetch_multiple(struct string_list *list, int max_children)
-{
-	int i, result = 0;
-	struct strvec argv = STRVEC_INIT;
-
-	if (!append && write_fetch_head) {
-		int errcode = truncate_fetch_head();
-		if (errcode)
-			return errcode;
-	}
-
-	strvec_pushl(&argv, "fetch", "--append", "--no-auto-gc",
-		     "--no-write-commit-graph", NULL);
-	add_options_to_argv(&argv);
-
-	if (max_children != 1 && list->nr != 1) {
-		struct parallel_fetch_state state = { argv.v, list, 0, 0 };
-
-		strvec_push(&argv, "--end-of-options");
-		result = run_processes_parallel_tr2(max_children,
-						    &fetch_next_remote,
-						    &fetch_failed_to_start,
-						    &fetch_finished,
-						    &state,
-						    "fetch", "parallel/fetch");
-
-		if (!result)
-			result = state.result;
-	} else
-		for (i = 0; i < list->nr; i++) {
-			const char *name = list->items[i].string;
-			strvec_push(&argv, name);
-			if (verbosity >= 0)
-				printf(_("Fetching %s\n"), name);
-			if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
-				error(_("Could not fetch %s"), name);
-				result = 1;
-			}
-			strvec_pop(&argv);
-		}
-
-	strvec_clear(&argv);
-	return !!result;
-}
-
-/*
- * Fetching from the promisor remote should use the given filter-spec
- * or inherit the default filter-spec from the config.
- */
-static inline void fetch_one_setup_partial(struct remote *remote)
-{
-	/*
-	 * Explicit --no-filter argument overrides everything, regardless
-	 * of any prior partial clones and fetches.
-	 */
-	if (filter_options.no_filter)
-		return;
-
-	/*
-	 * If no prior partial clone/fetch and the current fetch DID NOT
-	 * request a partial-fetch, do a normal fetch.
-	 */
-	if (!has_promisor_remote() && !filter_options.choice)
-		return;
-
-	/*
-	 * If this is a partial-fetch request, we enable partial on
-	 * this repo if not already enabled and remember the given
-	 * filter-spec as the default for subsequent fetches to this
-	 * remote if there is currently no default filter-spec.
-	 */
-	if (filter_options.choice) {
-		partial_clone_register(remote->name, &filter_options);
-		return;
-	}
-
-	/*
-	 * Do a partial-fetch from the promisor remote using either the
-	 * explicitly given filter-spec or inherit the filter-spec from
-	 * the config.
-	 */
-	if (!filter_options.choice)
-		partial_clone_get_default_filter_spec(&filter_options, remote->name);
-	return;
-}
-
-static int fetch_one(struct remote *remote, int argc, const char **argv,
-		     int prune_tags_ok, int use_stdin_refspecs)
-{
-	struct refspec rs = REFSPEC_INIT_FETCH;
-	int i;
-	int exit_code;
-	int maybe_prune_tags;
-	int remote_via_config = remote_is_configured(remote, 0);
-
-	if (!remote)
-		die(_("No remote repository specified.  Please, specify either a URL or a\n"
-		    "remote name from which new revisions should be fetched."));
-
-	gtransport = prepare_transport(remote, 1);
-
-	if (prune < 0) {
-		/* no command line request */
-		if (0 <= remote->prune)
-			prune = remote->prune;
-		else if (0 <= fetch_prune_config)
-			prune = fetch_prune_config;
-		else
-			prune = PRUNE_BY_DEFAULT;
-	}
-
-	if (prune_tags < 0) {
-		/* no command line request */
-		if (0 <= remote->prune_tags)
-			prune_tags = remote->prune_tags;
-		else if (0 <= fetch_prune_tags_config)
-			prune_tags = fetch_prune_tags_config;
-		else
-			prune_tags = PRUNE_TAGS_BY_DEFAULT;
-	}
-
-	maybe_prune_tags = prune_tags_ok && prune_tags;
-	if (maybe_prune_tags && remote_via_config)
-		refspec_append(&remote->fetch, TAG_REFSPEC);
-
-	if (maybe_prune_tags && (argc || !remote_via_config))
-		refspec_append(&rs, TAG_REFSPEC);
-
-	for (i = 0; i < argc; i++) {
-		if (!strcmp(argv[i], "tag")) {
-			i++;
-			if (i >= argc)
-				die(_("You need to specify a tag name."));
-
-			refspec_appendf(&rs, "refs/tags/%s:refs/tags/%s",
-					argv[i], argv[i]);
-		} else {
-			refspec_append(&rs, argv[i]);
-		}
-	}
-
-	if (use_stdin_refspecs) {
-		struct strbuf line = STRBUF_INIT;
-		while (strbuf_getline_lf(&line, stdin) != EOF)
-			refspec_append(&rs, line.buf);
-		strbuf_release(&line);
-	}
-
-	if (server_options.nr)
-		gtransport->server_options = &server_options;
-
-	sigchain_push_common(unlock_pack_on_signal);
-	atexit(unlock_pack);
-	sigchain_push(SIGPIPE, SIG_IGN);
-	exit_code = do_fetch(gtransport, &rs);
-	sigchain_pop(SIGPIPE);
-	refspec_clear(&rs);
-	transport_disconnect(gtransport);
-	gtransport = NULL;
-	return exit_code;
-}
-
-int cmd_fetch(int argc, const char **argv, const char *prefix)
-{
-	int i;
-	struct string_list list = STRING_LIST_INIT_DUP;
-	struct remote *remote = NULL;
-	int result = 0;
-	int prune_tags_ok = 1;
-
-	packet_trace_identity("fetch");
-
-	/* Record the command line for the reflog */
-	strbuf_addstr(&default_rla, "fetch");
-	for (i = 1; i < argc; i++) {
-		/* This handles non-URLs gracefully */
-		char *anon = transport_anonymize_url(argv[i]);
-
-		strbuf_addf(&default_rla, " %s", anon);
-		free(anon);
-	}
-
-	git_config(git_fetch_config, NULL);
-
-	argc = parse_options(argc, argv, prefix,
-			     builtin_fetch_options, builtin_fetch_usage, 0);
-	if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
-		int *sfjc = submodule_fetch_jobs_config == -1
-			    ? &submodule_fetch_jobs_config : NULL;
-		int *rs = recurse_submodules == RECURSE_SUBMODULES_DEFAULT
-			  ? &recurse_submodules : NULL;
-
-		fetch_config_from_gitmodules(sfjc, rs);
-	}
-
-	if (deepen_relative) {
-		if (deepen_relative < 0)
-			die(_("Negative depth in --deepen is not supported"));
-		if (depth)
-			die(_("--deepen and --depth are mutually exclusive"));
-		depth = xstrfmt("%d", deepen_relative);
-	}
-	if (unshallow) {
-		if (depth)
-			die(_("--depth and --unshallow cannot be used together"));
-		else if (!is_repository_shallow(the_repository))
-			die(_("--unshallow on a complete repository does not make sense"));
-		else
-			depth = xstrfmt("%d", INFINITE_DEPTH);
-	}
-
-	/* no need to be strict, transport_set_option() will validate it again */
-	if (depth && atoi(depth) < 1)
-		die(_("depth %s is not a positive number"), depth);
-	if (depth || deepen_since || deepen_not.nr)
-		deepen = 1;
-
-	/* FETCH_HEAD never gets updated in --dry-run mode */
-	if (dry_run)
-		write_fetch_head = 0;
-
-	if (all) {
-		if (argc == 1)
-			die(_("fetch --all does not take a repository argument"));
-		else if (argc > 1)
-			die(_("fetch --all does not make sense with refspecs"));
-		(void) for_each_remote(get_one_remote_for_fetch, &list);
-	} else if (argc == 0) {
-		/* No arguments -- use default remote */
-		remote = remote_get(NULL);
-	} else if (multiple) {
-		/* All arguments are assumed to be remotes or groups */
-		for (i = 0; i < argc; i++)
-			if (!add_remote_or_group(argv[i], &list))
-				die(_("No such remote or remote group: %s"), argv[i]);
-	} else {
-		/* Single remote or group */
-		(void) add_remote_or_group(argv[0], &list);
-		if (list.nr > 1) {
-			/* More than one remote */
-			if (argc > 1)
-				die(_("Fetching a group and specifying refspecs does not make sense"));
-		} else {
-			/* Zero or one remotes */
-			remote = remote_get(argv[0]);
-			prune_tags_ok = (argc == 1);
-			argc--;
-			argv++;
-		}
-	}
-
-	if (remote) {
-		if (filter_options.choice || has_promisor_remote())
-			fetch_one_setup_partial(remote);
-		result = fetch_one(remote, argc, argv, prune_tags_ok, stdin_refspecs);
-	} else {
-		int max_children = max_jobs;
-
-		if (filter_options.choice)
-			die(_("--filter can only be used with the remote "
-			      "configured in extensions.partialclone"));
-
-		if (stdin_refspecs)
-			die(_("--stdin can only be used when fetching "
-			      "from one remote"));
-
-		if (max_children < 0)
-			max_children = fetch_parallel_config;
-
-		/* TODO should this also die if we have a previous partial-clone? */
-		result = fetch_multiple(&list, max_children);
-	}
-
-	if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
-		struct strvec options = STRVEC_INIT;
-		int max_children = max_jobs;
-
-		if (max_children < 0)
-			max_children = submodule_fetch_jobs_config;
-		if (max_children < 0)
-			max_children = fetch_parallel_config;
-
-		add_options_to_argv(&options);
-		result = fetch_populated_submodules(the_repository,
-						    &options,
-						    submodule_prefix,
-						    recurse_submodules,
-						    recurse_submodules_default,
-						    verbosity < 0,
-						    max_children);
-		strvec_clear(&options);
-	}
-
-	string_list_clear(&list, 0);
-
-	prepare_repo_settings(the_repository);
-	if (fetch_write_commit_graph > 0 ||
-	    (fetch_write_commit_graph < 0 &&
-	     the_repository->settings.fetch_write_commit_graph)) {
-		int commit_graph_flags = COMMIT_GRAPH_WRITE_SPLIT;
-
-		if (progress)
-			commit_graph_flags |= COMMIT_GRAPH_WRITE_PROGRESS;
-
-		write_commit_graph_reachable(the_repository->objects->odb,
-					     commit_graph_flags,
-					     NULL);
-	}
-
-	close_object_store(the_repository->objects);
-
-	if (enable_auto_gc)
-		run_auto_maintenance(verbosity < 0);
-
-	return result;
-}