path: root/t/
diff options
authorJeff King <>2020-04-01 12:15:37 (GMT)
committerJunio C Hamano <>2020-04-01 16:56:41 (GMT)
commit167a575e2db8e6e4e95fe53889258c16f35ac7f9 (patch)
tree61629ad7f8fadb246eb16b157914775098dbb59d /t/
parent3e96c66805f17d7345eba4733bc80c6fe646b95f (diff)
clone: use "quick" lookup while following tags
When cloning with --single-branch, we implement git-fetch's usual tag-following behavior, grabbing any tag objects that point to objects we have locally. When we're a partial clone, though, our has_object_file() check will actually lazy-fetch each tag. That not only defeats the purpose of --single-branch, but it does it incredibly slowly, potentially kicking off a new fetch for each tag. This is even worse for a shallow clone, which implies --single-branch, because even tags which are supersets of each other will be fetched individually. We can fix this by passing OBJECT_INFO_SKIP_FETCH_OBJECT to the call, which is what git-fetch does in this case. Likewise, let's include OBJECT_INFO_QUICK, as that's what git-fetch does. The rationale is discussed in 5827a03545 (fetch: use "quick" has_sha1_file for tag following, 2016-10-13), but here the tradeoff would apply even more so because clone is very unlikely to be racing with another process repacking our newly-created repository. This may provide a very small speedup even in the non-partial case case, as we'd avoid calling reprepare_packed_git() for each tag (though in practice, we'd only have a single packfile, so that reprepare should be quite cheap). Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 't/')
1 files changed, 8 insertions, 0 deletions
diff --git a/t/ b/t/
index da3ad4e..91322f3 100755
--- a/t/
+++ b/t/
@@ -405,6 +405,14 @@ test_expect_success 'verify fetch downloads only one pack when updating refs' '
test_line_count = 3 pack-list
+test_expect_success 'single-branch tag following respects partial clone' '
+ git clone --single-branch -b B --filter=blob:none \
+ "file://$(pwd)/srv.bare" single &&
+ git -C single rev-parse --verify refs/tags/B &&
+ git -C single rev-parse --verify refs/tags/A &&
+ test_must_fail git -C single rev-parse --verify refs/tags/C