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, 0 insertions, 55 deletions

diff --git a/third_party/git/t/t7009-filter-branch-null-sha1.sh b/third_party/git/t/t7009-filter-branch-null-sha1.sh
deleted file mode 100755
index 9ba9f24ad2..0000000000
--- a/third_party/git/t/t7009-filter-branch-null-sha1.sh
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/sh
-
-test_description='filter-branch removal of trees with null sha1'
-. ./test-lib.sh
-
-test_expect_success 'setup: base commits' '
-	test_commit one &&
-	test_commit two &&
-	test_commit three
-'
-
-test_expect_success 'setup: a commit with a bogus null sha1 in the tree' '
-	{
-		git ls-tree HEAD &&
-		printf "160000 commit $ZERO_OID\\tbroken\\n"
-	} >broken-tree &&
-	echo "add broken entry" >msg &&
-
-	tree=$(git mktree <broken-tree) &&
-	test_tick &&
-	commit=$(git commit-tree $tree -p HEAD <msg) &&
-	git update-ref HEAD "$commit"
-'
-
-# we have to make one more commit on top removing the broken
-# entry, since otherwise our index does not match HEAD (and filter-branch will
-# complain). We could make the index match HEAD, but doing so would involve
-# writing a null sha1 into the index.
-test_expect_success 'setup: bring HEAD and index in sync' '
-	test_tick &&
-	git commit -a -m "back to normal"
-'
-
-test_expect_success 'noop filter-branch complains' '
-	test_must_fail git filter-branch \
-		--force --prune-empty \
-		--index-filter "true"
-'
-
-test_expect_success 'filter commands are still checked' '
-	test_must_fail git filter-branch \
-		--force --prune-empty \
-		--index-filter "git rm --cached --ignore-unmatch three.t"
-'
-
-test_expect_success 'removing the broken entry works' '
-	echo three >expect &&
-	git filter-branch \
-		--force --prune-empty \
-		--index-filter "git rm --cached --ignore-unmatch broken" &&
-	git log -1 --format=%s >actual &&
-	test_cmp expect actual
-'
-
-test_done