merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 27 insertions, 15 deletions

diff --git a/third_party/git/t/t5516-fetch-push.sh b/third_party/git/t/t5516-fetch-push.sh
index c81ca360ac..d11382f769 100755
--- a/third_party/git/t/t5516-fetch-push.sh
+++ b/third_party/git/t/t5516-fetch-push.sh
@@ -747,42 +747,42 @@ test_expect_success 'deletion of a non-existent ref alone does trigger post-rece
 '
 
 test_expect_success 'mixed ref updates, deletes, invalid deletes trigger hooks with correct input' '
-	mk_test_with_hooks testrepo heads/master heads/next heads/pu &&
+	mk_test_with_hooks testrepo heads/master heads/next heads/seen &&
 	orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
 	newmaster=$(git show-ref -s --verify refs/heads/master) &&
 	orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
 	newnext=$ZERO_OID &&
-	orgpu=$(cd testrepo && git show-ref -s --verify refs/heads/pu) &&
-	newpu=$(git show-ref -s --verify refs/heads/master) &&
+	orgseen=$(cd testrepo && git show-ref -s --verify refs/heads/seen) &&
+	newseen=$(git show-ref -s --verify refs/heads/master) &&
 	git push testrepo refs/heads/master:refs/heads/master \
-	    refs/heads/master:refs/heads/pu :refs/heads/next \
+	    refs/heads/master:refs/heads/seen :refs/heads/next \
 	    :refs/heads/nonexistent &&
 	(
 		cd testrepo/.git &&
 		cat >pre-receive.expect <<-EOF &&
 		$orgmaster $newmaster refs/heads/master
 		$orgnext $newnext refs/heads/next
-		$orgpu $newpu refs/heads/pu
+		$orgseen $newseen refs/heads/seen
 		$ZERO_OID $ZERO_OID refs/heads/nonexistent
 		EOF
 
 		cat >update.expect <<-EOF &&
 		refs/heads/master $orgmaster $newmaster
 		refs/heads/next $orgnext $newnext
-		refs/heads/pu $orgpu $newpu
+		refs/heads/seen $orgseen $newseen
 		refs/heads/nonexistent $ZERO_OID $ZERO_OID
 		EOF
 
 		cat >post-receive.expect <<-EOF &&
 		$orgmaster $newmaster refs/heads/master
 		$orgnext $newnext refs/heads/next
-		$orgpu $newpu refs/heads/pu
+		$orgseen $newseen refs/heads/seen
 		EOF
 
 		cat >post-update.expect <<-EOF &&
 		refs/heads/master
 		refs/heads/next
-		refs/heads/pu
+		refs/heads/seen
 		EOF
 
 		test_cmp pre-receive.expect pre-receive.actual &&
@@ -1039,7 +1039,7 @@ test_force_fetch_tag "annotated tag" "-f -a -m'tag message'"
 test_expect_success 'push --porcelain' '
 	mk_empty testrepo &&
 	echo >.git/foo  "To testrepo" &&
-	echo >>.git/foo "*	refs/heads/master:refs/remotes/origin/master	[new branch]"  &&
+	echo >>.git/foo "*	refs/heads/master:refs/remotes/origin/master	[new reference]"  &&
 	echo >>.git/foo "Done" &&
 	git push >.git/bar --porcelain  testrepo refs/heads/master:refs/remotes/origin/master &&
 	(
@@ -1066,6 +1066,7 @@ test_expect_success 'push --porcelain rejected' '
 
 	echo >.git/foo  "To testrepo"  &&
 	echo >>.git/foo "!	refs/heads/master:refs/heads/master	[remote rejected] (branch is currently checked out)" &&
+	echo >>.git/foo "Done" &&
 
 	test_must_fail git push >.git/bar --porcelain  testrepo refs/heads/master:refs/heads/master &&
 	test_cmp .git/foo .git/bar
@@ -1151,7 +1152,7 @@ test_expect_success 'fetch exact SHA1' '
 		# unadvertised objects, so restrict this test to v0.
 
 		# fetching the hidden object should fail by default
-		test_must_fail env GIT_TEST_PROTOCOL_VERSION= \
+		test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
 			git fetch -v ../testrepo $the_commit:refs/heads/copy 2>err &&
 		test_i18ngrep "Server does not allow request for unadvertised object" err &&
 		test_must_fail git rev-parse --verify refs/heads/copy &&
@@ -1210,7 +1211,7 @@ do
 			cd shallow &&
 			# Some protocol versions (e.g. 2) support fetching
 			# unadvertised objects, so restrict this test to v0.
-			test_must_fail env GIT_TEST_PROTOCOL_VERSION= \
+			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
 				git fetch --depth=1 ../testrepo/.git $SHA1 &&
 			git --git-dir=../testrepo/.git config uploadpack.allowreachablesha1inwant true &&
 			git fetch --depth=1 ../testrepo/.git $SHA1 &&
@@ -1241,9 +1242,9 @@ do
 			cd shallow &&
 			# Some protocol versions (e.g. 2) support fetching
 			# unadvertised objects, so restrict this test to v0.
-			test_must_fail env GIT_TEST_PROTOCOL_VERSION= \
+			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
 				git fetch ../testrepo/.git $SHA1_3 &&
-			test_must_fail env GIT_TEST_PROTOCOL_VERSION= \
+			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
 				git fetch ../testrepo/.git $SHA1_1 &&
 			git --git-dir=../testrepo/.git config uploadpack.allowreachablesha1inwant true &&
 			git fetch ../testrepo/.git $SHA1_1 &&
@@ -1251,7 +1252,7 @@ do
 			test_must_fail git cat-file commit $SHA1_2 &&
 			git fetch ../testrepo/.git $SHA1_2 &&
 			git cat-file commit $SHA1_2 &&
-			test_must_fail env GIT_TEST_PROTOCOL_VERSION= \
+			test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
 				git fetch ../testrepo/.git $SHA1_3 2>err &&
 			test_i18ngrep "remote error:.*not our ref.*$SHA1_3\$" err
 		)
@@ -1291,7 +1292,7 @@ test_expect_success 'peeled advertisements are not considered ref tips' '
 	git -C testrepo commit --allow-empty -m two &&
 	git -C testrepo tag -m foo mytag HEAD^ &&
 	oid=$(git -C testrepo rev-parse mytag^{commit}) &&
-	test_must_fail env GIT_TEST_PROTOCOL_VERSION= \
+	test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 \
 		git fetch testrepo $oid 2>err &&
 	test_i18ngrep "Server does not allow request for unadvertised object" err
 '
@@ -1712,4 +1713,15 @@ test_expect_success 'updateInstead with push-to-checkout hook' '
 	)
 '
 
+test_expect_success 'denyCurrentBranch and worktrees' '
+	git worktree add new-wt &&
+	git clone . cloned &&
+	test_commit -C cloned first &&
+	test_config receive.denyCurrentBranch refuse &&
+	test_must_fail git -C cloned push origin HEAD:new-wt &&
+	test_config receive.denyCurrentBranch updateInstead &&
+	git -C cloned push origin HEAD:new-wt &&
+	test_must_fail git -C cloned push --delete origin new-wt
+'
+
 test_done