transport-helper.c: do not overwrite forced bit

diff --git a/t/t1508-at-combinations.sh b/t/t1508-at-combinations.sh
index e5aea3b89602fdaf5ed3a9a230a604dd3f48cda0..ceb844985f97e9472ffcc3fe2f375912d126a4e8 100755 (executable)
--- a/t/t1508-at-combinations.sh
+++ b/t/t1508-at-combinations.sh
@@ -32,6 +32,9 @@ test_expect_success 'setup' '
        git checkout -b upstream-branch &&
        test_commit upstream-one &&
        test_commit upstream-two &&
+       git checkout -b @/at-test &&
+       git checkout -b @@/at-test &&
+       git checkout -b @at-test &&
        git checkout -b old-branch &&
        test_commit old-one &&
        test_commit old-two &&
@@ -55,6 +58,11 @@ check "HEAD@{u}" ref refs/heads/upstream-branch
 check "@{u}@{1}" commit upstream-one
 check "@{-1}@{u}" ref refs/heads/master
 check "@{-1}@{u}@{1}" commit master-one
+check "@" commit new-two
+check "@@{u}" ref refs/heads/upstream-branch
+check "@@/at-test" ref refs/heads/@@/at-test
+check "@/at-test" ref refs/heads/@/at-test
+check "@at-test" ref refs/heads/@at-test
 nonsense "@{u}@{-1}"
 nonsense "@{0}@{0}"
 nonsense "@{1}@{u}"