[PATCH] t5606: run clone branch name test with protocol v2

[Jonathan Tan <jonathantanmy@google.com>]

4f37d45706 ("clone: respect remote unborn HEAD", 2021-02-05) introduces
a new feature (if the remote has an unborn HEAD, e.g. when the remote
repository is empty, use it as the name of the branch) that only works
in protocol v2, but did not ensure that one of its tests always uses
protocol v2, and thus that test would fail if
GIT_TEST_PROTOCOL_VERSION=0 (or 1) is used. Therefore, add "-c
protocol.version=2" to the appropriate test.

(The rest of the tests from that commit have "-c protocol.version=2"
already added.)

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
---
Thanks, Son Luong, for noticing this. Here's a fix for the
GIT_TEST_PROTOCOL_VERSION part. This was built on 4f37d45706 but also
applies cleanly on master.

 t/t5606-clone-options.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t5606-clone-options.sh b/t/t5606-clone-options.sh
index ca6339a5fb..5e30772735 100755
--- a/t/t5606-clone-options.sh
+++ b/t/t5606-clone-options.sh
@@ -106,7 +106,7 @@ test_expect_success 'chooses correct default initial branch name' '
 	git -c init.defaultBranch=foo init --bare empty &&
 	test_config -C empty lsrefs.unborn advertise &&
 	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
-	git -c init.defaultBranch=up clone empty whats-up &&
+	git -c init.defaultBranch=up -c protocol.version=2 clone empty whats-up &&
 	test refs/heads/foo = $(git -C whats-up symbolic-ref HEAD) &&
 	test refs/heads/foo = $(git -C whats-up config branch.foo.merge)
 '
-- 
2.31.0.rc2.261.g7f71774620-goog