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-rw-r--r--third_party/git/builtin/clone.c1337
1 files changed, 0 insertions, 1337 deletions
diff --git a/third_party/git/builtin/clone.c b/third_party/git/builtin/clone.c
deleted file mode 100644
index 391aa41075ee..000000000000
--- a/third_party/git/builtin/clone.c
+++ /dev/null
@@ -1,1337 +0,0 @@
-/*
- * Builtin "git clone"
- *
- * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
- *		 2008 Daniel Barkalow <barkalow@iabervon.org>
- * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
- *
- * Clone a repository into a different directory that does not yet exist.
- */
-
-#define USE_THE_INDEX_COMPATIBILITY_MACROS
-#include "builtin.h"
-#include "config.h"
-#include "lockfile.h"
-#include "parse-options.h"
-#include "fetch-pack.h"
-#include "refs.h"
-#include "refspec.h"
-#include "object-store.h"
-#include "tree.h"
-#include "tree-walk.h"
-#include "unpack-trees.h"
-#include "transport.h"
-#include "strbuf.h"
-#include "dir.h"
-#include "dir-iterator.h"
-#include "iterator.h"
-#include "sigchain.h"
-#include "branch.h"
-#include "remote.h"
-#include "run-command.h"
-#include "connected.h"
-#include "packfile.h"
-#include "list-objects-filter-options.h"
-
-/*
- * Overall FIXMEs:
- *  - respect DB_ENVIRONMENT for .git/objects.
- *
- * Implementation notes:
- *  - dropping use-separate-remote and no-separate-remote compatibility
- *
- */
-static const char * const builtin_clone_usage[] = {
-	N_("git clone [<options>] [--] <repo> [<dir>]"),
-	NULL
-};
-
-static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
-static int option_local = -1, option_no_hardlinks, option_shared;
-static int option_no_tags;
-static int option_shallow_submodules;
-static int deepen;
-static char *option_template, *option_depth, *option_since;
-static char *option_origin = NULL;
-static char *option_branch = NULL;
-static struct string_list option_not = STRING_LIST_INIT_NODUP;
-static const char *real_git_dir;
-static char *option_upload_pack = "git-upload-pack";
-static int option_verbosity;
-static int option_progress = -1;
-static int option_sparse_checkout;
-static enum transport_family family;
-static struct string_list option_config = STRING_LIST_INIT_NODUP;
-static struct string_list option_required_reference = STRING_LIST_INIT_NODUP;
-static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
-static int option_dissociate;
-static int max_jobs = -1;
-static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
-static struct list_objects_filter_options filter_options;
-static struct string_list server_options = STRING_LIST_INIT_NODUP;
-static int option_remote_submodules;
-
-static int recurse_submodules_cb(const struct option *opt,
-				 const char *arg, int unset)
-{
-	if (unset)
-		string_list_clear((struct string_list *)opt->value, 0);
-	else if (arg)
-		string_list_append((struct string_list *)opt->value, arg);
-	else
-		string_list_append((struct string_list *)opt->value,
-				   (const char *)opt->defval);
-
-	return 0;
-}
-
-static struct option builtin_clone_options[] = {
-	OPT__VERBOSITY(&option_verbosity),
-	OPT_BOOL(0, "progress", &option_progress,
-		 N_("force progress reporting")),
-	OPT_BOOL('n', "no-checkout", &option_no_checkout,
-		 N_("don't create a checkout")),
-	OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
-	OPT_HIDDEN_BOOL(0, "naked", &option_bare,
-			N_("create a bare repository")),
-	OPT_BOOL(0, "mirror", &option_mirror,
-		 N_("create a mirror repository (implies bare)")),
-	OPT_BOOL('l', "local", &option_local,
-		N_("to clone from a local repository")),
-	OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
-		    N_("don't use local hardlinks, always copy")),
-	OPT_BOOL('s', "shared", &option_shared,
-		    N_("setup as shared repository")),
-	{ OPTION_CALLBACK, 0, "recurse-submodules", &option_recurse_submodules,
-	  N_("pathspec"), N_("initialize submodules in the clone"),
-	  PARSE_OPT_OPTARG, recurse_submodules_cb, (intptr_t)"." },
-	OPT_ALIAS(0, "recursive", "recurse-submodules"),
-	OPT_INTEGER('j', "jobs", &max_jobs,
-		    N_("number of submodules cloned in parallel")),
-	OPT_STRING(0, "template", &option_template, N_("template-directory"),
-		   N_("directory from which templates will be used")),
-	OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"),
-			N_("reference repository")),
-	OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference,
-			N_("repo"), N_("reference repository")),
-	OPT_BOOL(0, "dissociate", &option_dissociate,
-		 N_("use --reference only while cloning")),
-	OPT_STRING('o', "origin", &option_origin, N_("name"),
-		   N_("use <name> instead of 'origin' to track upstream")),
-	OPT_STRING('b', "branch", &option_branch, N_("branch"),
-		   N_("checkout <branch> instead of the remote's HEAD")),
-	OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
-		   N_("path to git-upload-pack on the remote")),
-	OPT_STRING(0, "depth", &option_depth, N_("depth"),
-		    N_("create a shallow clone of that depth")),
-	OPT_STRING(0, "shallow-since", &option_since, N_("time"),
-		    N_("create a shallow clone since a specific time")),
-	OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
-			N_("deepen history of shallow clone, excluding rev")),
-	OPT_BOOL(0, "single-branch", &option_single_branch,
-		    N_("clone only one branch, HEAD or --branch")),
-	OPT_BOOL(0, "no-tags", &option_no_tags,
-		 N_("don't clone any tags, and make later fetches not to follow them")),
-	OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
-		    N_("any cloned submodules will be shallow")),
-	OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
-		   N_("separate git dir from working tree")),
-	OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
-			N_("set config inside the new repository")),
-	OPT_STRING_LIST(0, "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_PARSE_LIST_OBJECTS_FILTER(&filter_options),
-	OPT_BOOL(0, "remote-submodules", &option_remote_submodules,
-		    N_("any cloned submodules will use their remote-tracking branch")),
-	OPT_BOOL(0, "sparse", &option_sparse_checkout,
-		    N_("initialize sparse-checkout file to include only files at root")),
-	OPT_END()
-};
-
-static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
-{
-	static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
-	static char *bundle_suffix[] = { ".bundle", "" };
-	size_t baselen = path->len;
-	struct stat st;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(suffix); i++) {
-		strbuf_setlen(path, baselen);
-		strbuf_addstr(path, suffix[i]);
-		if (stat(path->buf, &st))
-			continue;
-		if (S_ISDIR(st.st_mode) && is_git_directory(path->buf)) {
-			*is_bundle = 0;
-			return path->buf;
-		} else if (S_ISREG(st.st_mode) && st.st_size > 8) {
-			/* Is it a "gitfile"? */
-			char signature[8];
-			const char *dst;
-			int len, fd = open(path->buf, O_RDONLY);
-			if (fd < 0)
-				continue;
-			len = read_in_full(fd, signature, 8);
-			close(fd);
-			if (len != 8 || strncmp(signature, "gitdir: ", 8))
-				continue;
-			dst = read_gitfile(path->buf);
-			if (dst) {
-				*is_bundle = 0;
-				return dst;
-			}
-		}
-	}
-
-	for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
-		strbuf_setlen(path, baselen);
-		strbuf_addstr(path, bundle_suffix[i]);
-		if (!stat(path->buf, &st) && S_ISREG(st.st_mode)) {
-			*is_bundle = 1;
-			return path->buf;
-		}
-	}
-
-	return NULL;
-}
-
-static char *get_repo_path(const char *repo, int *is_bundle)
-{
-	struct strbuf path = STRBUF_INIT;
-	const char *raw;
-	char *canon;
-
-	strbuf_addstr(&path, repo);
-	raw = get_repo_path_1(&path, is_bundle);
-	canon = raw ? absolute_pathdup(raw) : NULL;
-	strbuf_release(&path);
-	return canon;
-}
-
-static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
-{
-	const char *end = repo + strlen(repo), *start, *ptr;
-	size_t len;
-	char *dir;
-
-	/*
-	 * Skip scheme.
-	 */
-	start = strstr(repo, "://");
-	if (start == NULL)
-		start = repo;
-	else
-		start += 3;
-
-	/*
-	 * Skip authentication data. The stripping does happen
-	 * greedily, such that we strip up to the last '@' inside
-	 * the host part.
-	 */
-	for (ptr = start; ptr < end && !is_dir_sep(*ptr); ptr++) {
-		if (*ptr == '@')
-			start = ptr + 1;
-	}
-
-	/*
-	 * Strip trailing spaces, slashes and /.git
-	 */
-	while (start < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
-		end--;
-	if (end - start > 5 && is_dir_sep(end[-5]) &&
-	    !strncmp(end - 4, ".git", 4)) {
-		end -= 5;
-		while (start < end && is_dir_sep(end[-1]))
-			end--;
-	}
-
-	/*
-	 * Strip trailing port number if we've got only a
-	 * hostname (that is, there is no dir separator but a
-	 * colon). This check is required such that we do not
-	 * strip URI's like '/foo/bar:2222.git', which should
-	 * result in a dir '2222' being guessed due to backwards
-	 * compatibility.
-	 */
-	if (memchr(start, '/', end - start) == NULL
-	    && memchr(start, ':', end - start) != NULL) {
-		ptr = end;
-		while (start < ptr && isdigit(ptr[-1]) && ptr[-1] != ':')
-			ptr--;
-		if (start < ptr && ptr[-1] == ':')
-			end = ptr - 1;
-	}
-
-	/*
-	 * Find last component. To remain backwards compatible we
-	 * also regard colons as path separators, such that
-	 * cloning a repository 'foo:bar.git' would result in a
-	 * directory 'bar' being guessed.
-	 */
-	ptr = end;
-	while (start < ptr && !is_dir_sep(ptr[-1]) && ptr[-1] != ':')
-		ptr--;
-	start = ptr;
-
-	/*
-	 * Strip .{bundle,git}.
-	 */
-	len = end - start;
-	strip_suffix_mem(start, &len, is_bundle ? ".bundle" : ".git");
-
-	if (!len || (len == 1 && *start == '/'))
-		die(_("No directory name could be guessed.\n"
-		      "Please specify a directory on the command line"));
-
-	if (is_bare)
-		dir = xstrfmt("%.*s.git", (int)len, start);
-	else
-		dir = xstrndup(start, len);
-	/*
-	 * Replace sequences of 'control' characters and whitespace
-	 * with one ascii space, remove leading and trailing spaces.
-	 */
-	if (*dir) {
-		char *out = dir;
-		int prev_space = 1 /* strip leading whitespace */;
-		for (end = dir; *end; ++end) {
-			char ch = *end;
-			if ((unsigned char)ch < '\x20')
-				ch = '\x20';
-			if (isspace(ch)) {
-				if (prev_space)
-					continue;
-				prev_space = 1;
-			} else
-				prev_space = 0;
-			*out++ = ch;
-		}
-		*out = '\0';
-		if (out > dir && prev_space)
-			out[-1] = '\0';
-	}
-	return dir;
-}
-
-static void strip_trailing_slashes(char *dir)
-{
-	char *end = dir + strlen(dir);
-
-	while (dir < end - 1 && is_dir_sep(end[-1]))
-		end--;
-	*end = '\0';
-}
-
-static int add_one_reference(struct string_list_item *item, void *cb_data)
-{
-	struct strbuf err = STRBUF_INIT;
-	int *required = cb_data;
-	char *ref_git = compute_alternate_path(item->string, &err);
-
-	if (!ref_git) {
-		if (*required)
-			die("%s", err.buf);
-		else
-			fprintf(stderr,
-				_("info: Could not add alternate for '%s': %s\n"),
-				item->string, err.buf);
-	} else {
-		struct strbuf sb = STRBUF_INIT;
-		strbuf_addf(&sb, "%s/objects", ref_git);
-		add_to_alternates_file(sb.buf);
-		strbuf_release(&sb);
-	}
-
-	strbuf_release(&err);
-	free(ref_git);
-	return 0;
-}
-
-static void setup_reference(void)
-{
-	int required = 1;
-	for_each_string_list(&option_required_reference,
-			     add_one_reference, &required);
-	required = 0;
-	for_each_string_list(&option_optional_reference,
-			     add_one_reference, &required);
-}
-
-static void copy_alternates(struct strbuf *src, const char *src_repo)
-{
-	/*
-	 * Read from the source objects/info/alternates file
-	 * and copy the entries to corresponding file in the
-	 * destination repository with add_to_alternates_file().
-	 * Both src and dst have "$path/objects/info/alternates".
-	 *
-	 * Instead of copying bit-for-bit from the original,
-	 * we need to append to existing one so that the already
-	 * created entry via "clone -s" is not lost, and also
-	 * to turn entries with paths relative to the original
-	 * absolute, so that they can be used in the new repository.
-	 */
-	FILE *in = xfopen(src->buf, "r");
-	struct strbuf line = STRBUF_INIT;
-
-	while (strbuf_getline(&line, in) != EOF) {
-		char *abs_path;
-		if (!line.len || line.buf[0] == '#')
-			continue;
-		if (is_absolute_path(line.buf)) {
-			add_to_alternates_file(line.buf);
-			continue;
-		}
-		abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
-		if (!normalize_path_copy(abs_path, abs_path))
-			add_to_alternates_file(abs_path);
-		else
-			warning("skipping invalid relative alternate: %s/%s",
-				src_repo, line.buf);
-		free(abs_path);
-	}
-	strbuf_release(&line);
-	fclose(in);
-}
-
-static void mkdir_if_missing(const char *pathname, mode_t mode)
-{
-	struct stat st;
-
-	if (!mkdir(pathname, mode))
-		return;
-
-	if (errno != EEXIST)
-		die_errno(_("failed to create directory '%s'"), pathname);
-	else if (stat(pathname, &st))
-		die_errno(_("failed to stat '%s'"), pathname);
-	else if (!S_ISDIR(st.st_mode))
-		die(_("%s exists and is not a directory"), pathname);
-}
-
-static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
-				   const char *src_repo)
-{
-	int src_len, dest_len;
-	struct dir_iterator *iter;
-	int iter_status;
-	unsigned int flags;
-	struct strbuf realpath = STRBUF_INIT;
-
-	mkdir_if_missing(dest->buf, 0777);
-
-	flags = DIR_ITERATOR_PEDANTIC | DIR_ITERATOR_FOLLOW_SYMLINKS;
-	iter = dir_iterator_begin(src->buf, flags);
-
-	if (!iter)
-		die_errno(_("failed to start iterator over '%s'"), src->buf);
-
-	strbuf_addch(src, '/');
-	src_len = src->len;
-	strbuf_addch(dest, '/');
-	dest_len = dest->len;
-
-	while ((iter_status = dir_iterator_advance(iter)) == ITER_OK) {
-		strbuf_setlen(src, src_len);
-		strbuf_addstr(src, iter->relative_path);
-		strbuf_setlen(dest, dest_len);
-		strbuf_addstr(dest, iter->relative_path);
-
-		if (S_ISDIR(iter->st.st_mode)) {
-			mkdir_if_missing(dest->buf, 0777);
-			continue;
-		}
-
-		/* Files that cannot be copied bit-for-bit... */
-		if (!fspathcmp(iter->relative_path, "info/alternates")) {
-			copy_alternates(src, src_repo);
-			continue;
-		}
-
-		if (unlink(dest->buf) && errno != ENOENT)
-			die_errno(_("failed to unlink '%s'"), dest->buf);
-		if (!option_no_hardlinks) {
-			strbuf_realpath(&realpath, src->buf, 1);
-			if (!link(realpath.buf, dest->buf))
-				continue;
-			if (option_local > 0)
-				die_errno(_("failed to create link '%s'"), dest->buf);
-			option_no_hardlinks = 1;
-		}
-		if (copy_file_with_time(dest->buf, src->buf, 0666))
-			die_errno(_("failed to copy file to '%s'"), dest->buf);
-	}
-
-	if (iter_status != ITER_DONE) {
-		strbuf_setlen(src, src_len);
-		die(_("failed to iterate over '%s'"), src->buf);
-	}
-
-	strbuf_release(&realpath);
-}
-
-static void clone_local(const char *src_repo, const char *dest_repo)
-{
-	if (option_shared) {
-		struct strbuf alt = STRBUF_INIT;
-		get_common_dir(&alt, src_repo);
-		strbuf_addstr(&alt, "/objects");
-		add_to_alternates_file(alt.buf);
-		strbuf_release(&alt);
-	} else {
-		struct strbuf src = STRBUF_INIT;
-		struct strbuf dest = STRBUF_INIT;
-		get_common_dir(&src, src_repo);
-		get_common_dir(&dest, dest_repo);
-		strbuf_addstr(&src, "/objects");
-		strbuf_addstr(&dest, "/objects");
-		copy_or_link_directory(&src, &dest, src_repo);
-		strbuf_release(&src);
-		strbuf_release(&dest);
-	}
-
-	if (0 <= option_verbosity)
-		fprintf(stderr, _("done.\n"));
-}
-
-static const char *junk_work_tree;
-static int junk_work_tree_flags;
-static const char *junk_git_dir;
-static int junk_git_dir_flags;
-static enum {
-	JUNK_LEAVE_NONE,
-	JUNK_LEAVE_REPO,
-	JUNK_LEAVE_ALL
-} junk_mode = JUNK_LEAVE_NONE;
-
-static const char junk_leave_repo_msg[] =
-N_("Clone succeeded, but checkout failed.\n"
-   "You can inspect what was checked out with 'git status'\n"
-   "and retry with 'git restore --source=HEAD :/'\n");
-
-static void remove_junk(void)
-{
-	struct strbuf sb = STRBUF_INIT;
-
-	switch (junk_mode) {
-	case JUNK_LEAVE_REPO:
-		warning("%s", _(junk_leave_repo_msg));
-		/* fall-through */
-	case JUNK_LEAVE_ALL:
-		return;
-	default:
-		/* proceed to removal */
-		break;
-	}
-
-	if (junk_git_dir) {
-		strbuf_addstr(&sb, junk_git_dir);
-		remove_dir_recursively(&sb, junk_git_dir_flags);
-		strbuf_reset(&sb);
-	}
-	if (junk_work_tree) {
-		strbuf_addstr(&sb, junk_work_tree);
-		remove_dir_recursively(&sb, junk_work_tree_flags);
-	}
-	strbuf_release(&sb);
-}
-
-static void remove_junk_on_signal(int signo)
-{
-	remove_junk();
-	sigchain_pop(signo);
-	raise(signo);
-}
-
-static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
-{
-	struct ref *ref;
-	struct strbuf head = STRBUF_INIT;
-	strbuf_addstr(&head, "refs/heads/");
-	strbuf_addstr(&head, branch);
-	ref = find_ref_by_name(refs, head.buf);
-	strbuf_release(&head);
-
-	if (ref)
-		return ref;
-
-	strbuf_addstr(&head, "refs/tags/");
-	strbuf_addstr(&head, branch);
-	ref = find_ref_by_name(refs, head.buf);
-	strbuf_release(&head);
-
-	return ref;
-}
-
-static struct ref *wanted_peer_refs(const struct ref *refs,
-		struct refspec *refspec)
-{
-	struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
-	struct ref *local_refs = head;
-	struct ref **tail = head ? &head->next : &local_refs;
-
-	if (option_single_branch) {
-		struct ref *remote_head = NULL;
-
-		if (!option_branch)
-			remote_head = guess_remote_head(head, refs, 0);
-		else {
-			local_refs = NULL;
-			tail = &local_refs;
-			remote_head = copy_ref(find_remote_branch(refs, option_branch));
-		}
-
-		if (!remote_head && option_branch)
-			warning(_("Could not find remote branch %s to clone."),
-				option_branch);
-		else {
-			int i;
-			for (i = 0; i < refspec->nr; i++)
-				get_fetch_map(remote_head, &refspec->items[i],
-					      &tail, 0);
-
-			/* if --branch=tag, pull the requested tag explicitly */
-			get_fetch_map(remote_head, tag_refspec, &tail, 0);
-		}
-	} else {
-		int i;
-		for (i = 0; i < refspec->nr; i++)
-			get_fetch_map(refs, &refspec->items[i], &tail, 0);
-	}
-
-	if (!option_mirror && !option_single_branch && !option_no_tags)
-		get_fetch_map(refs, tag_refspec, &tail, 0);
-
-	return local_refs;
-}
-
-static void write_remote_refs(const struct ref *local_refs)
-{
-	const struct ref *r;
-
-	struct ref_transaction *t;
-	struct strbuf err = STRBUF_INIT;
-
-	t = ref_transaction_begin(&err);
-	if (!t)
-		die("%s", err.buf);
-
-	for (r = local_refs; r; r = r->next) {
-		if (!r->peer_ref)
-			continue;
-		if (ref_transaction_create(t, r->peer_ref->name, &r->old_oid,
-					   0, NULL, &err))
-			die("%s", err.buf);
-	}
-
-	if (initial_ref_transaction_commit(t, &err))
-		die("%s", err.buf);
-
-	strbuf_release(&err);
-	ref_transaction_free(t);
-}
-
-static void write_followtags(const struct ref *refs, const char *msg)
-{
-	const struct ref *ref;
-	for (ref = refs; ref; ref = ref->next) {
-		if (!starts_with(ref->name, "refs/tags/"))
-			continue;
-		if (ends_with(ref->name, "^{}"))
-			continue;
-		if (!has_object_file_with_flags(&ref->old_oid,
-						OBJECT_INFO_QUICK |
-						OBJECT_INFO_SKIP_FETCH_OBJECT))
-			continue;
-		update_ref(msg, ref->name, &ref->old_oid, NULL, 0,
-			   UPDATE_REFS_DIE_ON_ERR);
-	}
-}
-
-static int iterate_ref_map(void *cb_data, struct object_id *oid)
-{
-	struct ref **rm = cb_data;
-	struct ref *ref = *rm;
-
-	/*
-	 * Skip anything missing a peer_ref, which we are not
-	 * actually going to write a ref for.
-	 */
-	while (ref && !ref->peer_ref)
-		ref = ref->next;
-	/* Returning -1 notes "end of list" to the caller. */
-	if (!ref)
-		return -1;
-
-	oidcpy(oid, &ref->old_oid);
-	*rm = ref->next;
-	return 0;
-}
-
-static void update_remote_refs(const struct ref *refs,
-			       const struct ref *mapped_refs,
-			       const struct ref *remote_head_points_at,
-			       const char *branch_top,
-			       const char *msg,
-			       struct transport *transport,
-			       int check_connectivity)
-{
-	const struct ref *rm = mapped_refs;
-
-	if (check_connectivity) {
-		struct check_connected_options opt = CHECK_CONNECTED_INIT;
-
-		opt.transport = transport;
-		opt.progress = transport->progress;
-
-		if (check_connected(iterate_ref_map, &rm, &opt))
-			die(_("remote did not send all necessary objects"));
-	}
-
-	if (refs) {
-		write_remote_refs(mapped_refs);
-		if (option_single_branch && !option_no_tags)
-			write_followtags(refs, msg);
-	}
-
-	if (remote_head_points_at && !option_bare) {
-		struct strbuf head_ref = STRBUF_INIT;
-		strbuf_addstr(&head_ref, branch_top);
-		strbuf_addstr(&head_ref, "HEAD");
-		if (create_symref(head_ref.buf,
-				  remote_head_points_at->peer_ref->name,
-				  msg) < 0)
-			die(_("unable to update %s"), head_ref.buf);
-		strbuf_release(&head_ref);
-	}
-}
-
-static void update_head(const struct ref *our, const struct ref *remote,
-			const char *msg)
-{
-	const char *head;
-	if (our && skip_prefix(our->name, "refs/heads/", &head)) {
-		/* Local default branch link */
-		if (create_symref("HEAD", our->name, NULL) < 0)
-			die(_("unable to update HEAD"));
-		if (!option_bare) {
-			update_ref(msg, "HEAD", &our->old_oid, NULL, 0,
-				   UPDATE_REFS_DIE_ON_ERR);
-			install_branch_config(0, head, option_origin, our->name);
-		}
-	} else if (our) {
-		struct commit *c = lookup_commit_reference(the_repository,
-							   &our->old_oid);
-		/* --branch specifies a non-branch (i.e. tags), detach HEAD */
-		update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF,
-			   UPDATE_REFS_DIE_ON_ERR);
-	} else if (remote) {
-		/*
-		 * We know remote HEAD points to a non-branch, or
-		 * HEAD points to a branch but we don't know which one.
-		 * Detach HEAD in all these cases.
-		 */
-		update_ref(msg, "HEAD", &remote->old_oid, NULL, REF_NO_DEREF,
-			   UPDATE_REFS_DIE_ON_ERR);
-	}
-}
-
-static int git_sparse_checkout_init(const char *repo)
-{
-	struct strvec argv = STRVEC_INIT;
-	int result = 0;
-	strvec_pushl(&argv, "-C", repo, "sparse-checkout", "init", NULL);
-
-	/*
-	 * We must apply the setting in the current process
-	 * for the later checkout to use the sparse-checkout file.
-	 */
-	core_apply_sparse_checkout = 1;
-
-	if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
-		error(_("failed to initialize sparse-checkout"));
-		result = 1;
-	}
-
-	strvec_clear(&argv);
-	return result;
-}
-
-static int checkout(int submodule_progress)
-{
-	struct object_id oid;
-	char *head;
-	struct lock_file lock_file = LOCK_INIT;
-	struct unpack_trees_options opts;
-	struct tree *tree;
-	struct tree_desc t;
-	int err = 0;
-
-	if (option_no_checkout)
-		return 0;
-
-	head = resolve_refdup("HEAD", RESOLVE_REF_READING, &oid, NULL);
-	if (!head) {
-		warning(_("remote HEAD refers to nonexistent ref, "
-			  "unable to checkout.\n"));
-		return 0;
-	}
-	if (!strcmp(head, "HEAD")) {
-		if (advice_detached_head)
-			detach_advice(oid_to_hex(&oid));
-		FREE_AND_NULL(head);
-	} else {
-		if (!starts_with(head, "refs/heads/"))
-			die(_("HEAD not found below refs/heads!"));
-	}
-
-	/* We need to be in the new work tree for the checkout */
-	setup_work_tree();
-
-	hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
-
-	memset(&opts, 0, sizeof opts);
-	opts.update = 1;
-	opts.merge = 1;
-	opts.clone = 1;
-	opts.fn = oneway_merge;
-	opts.verbose_update = (option_verbosity >= 0);
-	opts.src_index = &the_index;
-	opts.dst_index = &the_index;
-	init_checkout_metadata(&opts.meta, head, &oid, NULL);
-
-	tree = parse_tree_indirect(&oid);
-	parse_tree(tree);
-	init_tree_desc(&t, tree->buffer, tree->size);
-	if (unpack_trees(1, &t, &opts) < 0)
-		die(_("unable to checkout working tree"));
-
-	free(head);
-
-	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
-		die(_("unable to write new index file"));
-
-	err |= run_hook_le(NULL, "post-checkout", oid_to_hex(&null_oid),
-			   oid_to_hex(&oid), "1", NULL);
-
-	if (!err && (option_recurse_submodules.nr > 0)) {
-		struct strvec args = STRVEC_INIT;
-		strvec_pushl(&args, "submodule", "update", "--require-init", "--recursive", NULL);
-
-		if (option_shallow_submodules == 1)
-			strvec_push(&args, "--depth=1");
-
-		if (max_jobs != -1)
-			strvec_pushf(&args, "--jobs=%d", max_jobs);
-
-		if (submodule_progress)
-			strvec_push(&args, "--progress");
-
-		if (option_verbosity < 0)
-			strvec_push(&args, "--quiet");
-
-		if (option_remote_submodules) {
-			strvec_push(&args, "--remote");
-			strvec_push(&args, "--no-fetch");
-		}
-
-		if (option_single_branch >= 0)
-			strvec_push(&args, option_single_branch ?
-					       "--single-branch" :
-					       "--no-single-branch");
-
-		err = run_command_v_opt(args.v, RUN_GIT_CMD);
-		strvec_clear(&args);
-	}
-
-	return err;
-}
-
-static int write_one_config(const char *key, const char *value, void *data)
-{
-	return git_config_set_multivar_gently(key,
-					      value ? value : "true",
-					      CONFIG_REGEX_NONE, 0);
-}
-
-static void write_config(struct string_list *config)
-{
-	int i;
-
-	for (i = 0; i < config->nr; i++) {
-		if (git_config_parse_parameter(config->items[i].string,
-					       write_one_config, NULL) < 0)
-			die(_("unable to write parameters to config file"));
-	}
-}
-
-static void write_refspec_config(const char *src_ref_prefix,
-		const struct ref *our_head_points_at,
-		const struct ref *remote_head_points_at,
-		struct strbuf *branch_top)
-{
-	struct strbuf key = STRBUF_INIT;
-	struct strbuf value = STRBUF_INIT;
-
-	if (option_mirror || !option_bare) {
-		if (option_single_branch && !option_mirror) {
-			if (option_branch) {
-				if (starts_with(our_head_points_at->name, "refs/tags/"))
-					strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
-						our_head_points_at->name);
-				else
-					strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
-						branch_top->buf, option_branch);
-			} else if (remote_head_points_at) {
-				const char *head = remote_head_points_at->name;
-				if (!skip_prefix(head, "refs/heads/", &head))
-					BUG("remote HEAD points at non-head?");
-
-				strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
-						branch_top->buf, head);
-			}
-			/*
-			 * otherwise, the next "git fetch" will
-			 * simply fetch from HEAD without updating
-			 * any remote-tracking branch, which is what
-			 * we want.
-			 */
-		} else {
-			strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
-		}
-		/* Configure the remote */
-		if (value.len) {
-			strbuf_addf(&key, "remote.%s.fetch", option_origin);
-			git_config_set_multivar(key.buf, value.buf, "^$", 0);
-			strbuf_reset(&key);
-
-			if (option_mirror) {
-				strbuf_addf(&key, "remote.%s.mirror", option_origin);
-				git_config_set(key.buf, "true");
-				strbuf_reset(&key);
-			}
-		}
-	}
-
-	strbuf_release(&key);
-	strbuf_release(&value);
-}
-
-static void dissociate_from_references(void)
-{
-	static const char* argv[] = { "repack", "-a", "-d", NULL };
-	char *alternates = git_pathdup("objects/info/alternates");
-
-	if (!access(alternates, F_OK)) {
-		if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN))
-			die(_("cannot repack to clean up"));
-		if (unlink(alternates) && errno != ENOENT)
-			die_errno(_("cannot unlink temporary alternates file"));
-	}
-	free(alternates);
-}
-
-static int path_exists(const char *path)
-{
-	struct stat sb;
-	return !stat(path, &sb);
-}
-
-int cmd_clone(int argc, const char **argv, const char *prefix)
-{
-	int is_bundle = 0, is_local;
-	const char *repo_name, *repo, *work_tree, *git_dir;
-	char *path, *dir, *display_repo = NULL;
-	int dest_exists, real_dest_exists = 0;
-	const struct ref *refs, *remote_head;
-	const struct ref *remote_head_points_at;
-	const struct ref *our_head_points_at;
-	struct ref *mapped_refs;
-	const struct ref *ref;
-	struct strbuf key = STRBUF_INIT;
-	struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
-	struct transport *transport = NULL;
-	const char *src_ref_prefix = "refs/heads/";
-	struct remote *remote;
-	int err = 0, complete_refs_before_fetch = 1;
-	int submodule_progress;
-
-	struct strvec ref_prefixes = STRVEC_INIT;
-
-	packet_trace_identity("clone");
-	argc = parse_options(argc, argv, prefix, builtin_clone_options,
-			     builtin_clone_usage, 0);
-
-	if (argc > 2)
-		usage_msg_opt(_("Too many arguments."),
-			builtin_clone_usage, builtin_clone_options);
-
-	if (argc == 0)
-		usage_msg_opt(_("You must specify a repository to clone."),
-			builtin_clone_usage, builtin_clone_options);
-
-	if (option_depth || option_since || option_not.nr)
-		deepen = 1;
-	if (option_single_branch == -1)
-		option_single_branch = deepen ? 1 : 0;
-
-	if (option_mirror)
-		option_bare = 1;
-
-	if (option_bare) {
-		if (option_origin)
-			die(_("--bare and --origin %s options are incompatible."),
-			    option_origin);
-		if (real_git_dir)
-			die(_("--bare and --separate-git-dir are incompatible."));
-		option_no_checkout = 1;
-	}
-
-	if (!option_origin)
-		option_origin = "origin";
-
-	repo_name = argv[0];
-
-	path = get_repo_path(repo_name, &is_bundle);
-	if (path)
-		repo = absolute_pathdup(repo_name);
-	else if (strchr(repo_name, ':')) {
-		repo = repo_name;
-		display_repo = transport_anonymize_url(repo);
-	} else
-		die(_("repository '%s' does not exist"), repo_name);
-
-	/* no need to be strict, transport_set_option() will validate it again */
-	if (option_depth && atoi(option_depth) < 1)
-		die(_("depth %s is not a positive number"), option_depth);
-
-	if (argc == 2)
-		dir = xstrdup(argv[1]);
-	else
-		dir = guess_dir_name(repo_name, is_bundle, option_bare);
-	strip_trailing_slashes(dir);
-
-	dest_exists = path_exists(dir);
-	if (dest_exists && !is_empty_dir(dir))
-		die(_("destination path '%s' already exists and is not "
-			"an empty directory."), dir);
-
-	if (real_git_dir) {
-		real_dest_exists = path_exists(real_git_dir);
-		if (real_dest_exists && !is_empty_dir(real_git_dir))
-			die(_("repository path '%s' already exists and is not "
-				"an empty directory."), real_git_dir);
-	}
-
-
-	strbuf_addf(&reflog_msg, "clone: from %s",
-		    display_repo ? display_repo : repo);
-	free(display_repo);
-
-	if (option_bare)
-		work_tree = NULL;
-	else {
-		work_tree = getenv("GIT_WORK_TREE");
-		if (work_tree && path_exists(work_tree))
-			die(_("working tree '%s' already exists."), work_tree);
-	}
-
-	if (option_bare || work_tree)
-		git_dir = xstrdup(dir);
-	else {
-		work_tree = dir;
-		git_dir = mkpathdup("%s/.git", dir);
-	}
-
-	atexit(remove_junk);
-	sigchain_push_common(remove_junk_on_signal);
-
-	if (!option_bare) {
-		if (safe_create_leading_directories_const(work_tree) < 0)
-			die_errno(_("could not create leading directories of '%s'"),
-				  work_tree);
-		if (dest_exists)
-			junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
-		else if (mkdir(work_tree, 0777))
-			die_errno(_("could not create work tree dir '%s'"),
-				  work_tree);
-		junk_work_tree = work_tree;
-		set_git_work_tree(work_tree);
-	}
-
-	if (real_git_dir) {
-		if (real_dest_exists)
-			junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
-		junk_git_dir = real_git_dir;
-	} else {
-		if (dest_exists)
-			junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
-		junk_git_dir = git_dir;
-	}
-	if (safe_create_leading_directories_const(git_dir) < 0)
-		die(_("could not create leading directories of '%s'"), git_dir);
-
-	if (0 <= option_verbosity) {
-		if (option_bare)
-			fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
-		else
-			fprintf(stderr, _("Cloning into '%s'...\n"), dir);
-	}
-
-	if (option_recurse_submodules.nr > 0) {
-		struct string_list_item *item;
-		struct strbuf sb = STRBUF_INIT;
-
-		/* remove duplicates */
-		string_list_sort(&option_recurse_submodules);
-		string_list_remove_duplicates(&option_recurse_submodules, 0);
-
-		/*
-		 * NEEDSWORK: In a multi-working-tree world, this needs to be
-		 * set in the per-worktree config.
-		 */
-		for_each_string_list_item(item, &option_recurse_submodules) {
-			strbuf_addf(&sb, "submodule.active=%s",
-				    item->string);
-			string_list_append(&option_config,
-					   strbuf_detach(&sb, NULL));
-		}
-
-		if (option_required_reference.nr &&
-		    option_optional_reference.nr)
-			die(_("clone --recursive is not compatible with "
-			      "both --reference and --reference-if-able"));
-		else if (option_required_reference.nr) {
-			string_list_append(&option_config,
-				"submodule.alternateLocation=superproject");
-			string_list_append(&option_config,
-				"submodule.alternateErrorStrategy=die");
-		} else if (option_optional_reference.nr) {
-			string_list_append(&option_config,
-				"submodule.alternateLocation=superproject");
-			string_list_append(&option_config,
-				"submodule.alternateErrorStrategy=info");
-		}
-	}
-
-	init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN, NULL,
-		INIT_DB_QUIET);
-
-	if (real_git_dir)
-		git_dir = real_git_dir;
-
-	write_config(&option_config);
-
-	git_config(git_default_config, NULL);
-
-	if (option_bare) {
-		if (option_mirror)
-			src_ref_prefix = "refs/";
-		strbuf_addstr(&branch_top, src_ref_prefix);
-
-		git_config_set("core.bare", "true");
-	} else {
-		strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
-	}
-
-	strbuf_addf(&key, "remote.%s.url", option_origin);
-	git_config_set(key.buf, repo);
-	strbuf_reset(&key);
-
-	if (option_no_tags) {
-		strbuf_addf(&key, "remote.%s.tagOpt", option_origin);
-		git_config_set(key.buf, "--no-tags");
-		strbuf_reset(&key);
-	}
-
-	if (option_required_reference.nr || option_optional_reference.nr)
-		setup_reference();
-
-	if (option_sparse_checkout && git_sparse_checkout_init(dir))
-		return 1;
-
-	remote = remote_get(option_origin);
-
-	refspec_appendf(&remote->fetch, "+%s*:%s*", src_ref_prefix,
-			branch_top.buf);
-
-	transport = transport_get(remote, remote->url[0]);
-	transport_set_verbosity(transport, option_verbosity, option_progress);
-	transport->family = family;
-
-	path = get_repo_path(remote->url[0], &is_bundle);
-	is_local = option_local != 0 && path && !is_bundle;
-	if (is_local) {
-		if (option_depth)
-			warning(_("--depth is ignored in local clones; use file:// instead."));
-		if (option_since)
-			warning(_("--shallow-since is ignored in local clones; use file:// instead."));
-		if (option_not.nr)
-			warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
-		if (filter_options.choice)
-			warning(_("--filter is ignored in local clones; use file:// instead."));
-		if (!access(mkpath("%s/shallow", path), F_OK)) {
-			if (option_local > 0)
-				warning(_("source repository is shallow, ignoring --local"));
-			is_local = 0;
-		}
-	}
-	if (option_local > 0 && !is_local)
-		warning(_("--local is ignored"));
-	transport->cloning = 1;
-
-	transport_set_option(transport, TRANS_OPT_KEEP, "yes");
-
-	if (option_depth)
-		transport_set_option(transport, TRANS_OPT_DEPTH,
-				     option_depth);
-	if (option_since)
-		transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
-				     option_since);
-	if (option_not.nr)
-		transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
-				     (const char *)&option_not);
-	if (option_single_branch)
-		transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
-
-	if (option_upload_pack)
-		transport_set_option(transport, TRANS_OPT_UPLOADPACK,
-				     option_upload_pack);
-
-	if (server_options.nr)
-		transport->server_options = &server_options;
-
-	if (filter_options.choice) {
-		const char *spec =
-			expand_list_objects_filter_spec(&filter_options);
-		transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
-				     spec);
-		transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
-	}
-
-	if (transport->smart_options && !deepen && !filter_options.choice)
-		transport->smart_options->check_self_contained_and_connected = 1;
-
-
-	strvec_push(&ref_prefixes, "HEAD");
-	refspec_ref_prefixes(&remote->fetch, &ref_prefixes);
-	if (option_branch)
-		expand_ref_prefix(&ref_prefixes, option_branch);
-	if (!option_no_tags)
-		strvec_push(&ref_prefixes, "refs/tags/");
-
-	refs = transport_get_remote_refs(transport, &ref_prefixes);
-
-	if (refs) {
-		int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
-
-		/*
-		 * Now that we know what algorithm the remote side is using,
-		 * let's set ours to the same thing.
-		 */
-		initialize_repository_version(hash_algo, 1);
-		repo_set_hash_algo(the_repository, hash_algo);
-
-		mapped_refs = wanted_peer_refs(refs, &remote->fetch);
-		/*
-		 * transport_get_remote_refs() may return refs with null sha-1
-		 * in mapped_refs (see struct transport->get_refs_list
-		 * comment). In that case we need fetch it early because
-		 * remote_head code below relies on it.
-		 *
-		 * for normal clones, transport_get_remote_refs() should
-		 * return reliable ref set, we can delay cloning until after
-		 * remote HEAD check.
-		 */
-		for (ref = refs; ref; ref = ref->next)
-			if (is_null_oid(&ref->old_oid)) {
-				complete_refs_before_fetch = 0;
-				break;
-			}
-
-		if (!is_local && !complete_refs_before_fetch)
-			transport_fetch_refs(transport, mapped_refs);
-
-		remote_head = find_ref_by_name(refs, "HEAD");
-		remote_head_points_at =
-			guess_remote_head(remote_head, mapped_refs, 0);
-
-		if (option_branch) {
-			our_head_points_at =
-				find_remote_branch(mapped_refs, option_branch);
-
-			if (!our_head_points_at)
-				die(_("Remote branch %s not found in upstream %s"),
-				    option_branch, option_origin);
-		}
-		else
-			our_head_points_at = remote_head_points_at;
-	}
-	else {
-		if (option_branch)
-			die(_("Remote branch %s not found in upstream %s"),
-					option_branch, option_origin);
-
-		warning(_("You appear to have cloned an empty repository."));
-		mapped_refs = NULL;
-		our_head_points_at = NULL;
-		remote_head_points_at = NULL;
-		remote_head = NULL;
-		option_no_checkout = 1;
-		if (!option_bare) {
-			const char *branch = git_default_branch_name();
-			char *ref = xstrfmt("refs/heads/%s", branch);
-
-			install_branch_config(0, branch, option_origin, ref);
-			free(ref);
-		}
-	}
-
-	write_refspec_config(src_ref_prefix, our_head_points_at,
-			remote_head_points_at, &branch_top);
-
-	if (filter_options.choice)
-		partial_clone_register(option_origin, &filter_options);
-
-	if (is_local)
-		clone_local(path, git_dir);
-	else if (refs && complete_refs_before_fetch)
-		transport_fetch_refs(transport, mapped_refs);
-
-	update_remote_refs(refs, mapped_refs, remote_head_points_at,
-			   branch_top.buf, reflog_msg.buf, transport,
-			   !is_local);
-
-	update_head(our_head_points_at, remote_head, reflog_msg.buf);
-
-	/*
-	 * We want to show progress for recursive submodule clones iff
-	 * we did so for the main clone. But only the transport knows
-	 * the final decision for this flag, so we need to rescue the value
-	 * before we free the transport.
-	 */
-	submodule_progress = transport->progress;
-
-	transport_unlock_pack(transport);
-	transport_disconnect(transport);
-
-	if (option_dissociate) {
-		close_object_store(the_repository->objects);
-		dissociate_from_references();
-	}
-
-	junk_mode = JUNK_LEAVE_REPO;
-	err = checkout(submodule_progress);
-
-	strbuf_release(&reflog_msg);
-	strbuf_release(&branch_top);
-	strbuf_release(&key);
-	junk_mode = JUNK_LEAVE_ALL;
-
-	strvec_clear(&ref_prefixes);
-	return err;
-}