transport-helper: die early on encountering deleted refs

diff --git a/t/t3703-add-magic-pathspec.sh b/t/t3703-add-magic-pathspec.sh
index ce5585ebb173834e629ea650db907840916917d7..e508246c0c904ec01775040d9fb0cc32b4b33dc2 100755 (executable)
--- a/t/t3703-add-magic-pathspec.sh
+++ b/t/t3703-add-magic-pathspec.sh
@@ -44,8 +44,12 @@ test_expect_success 'a file with the same (long) magic name exists' '
        git add -n "./:(icase)ha"
 '
 
-test_expect_success 'a file with the same (short) magic name exists' '
-       mkdir ":" &&
+if mkdir ":" 2>/dev/null
+then
+       test_set_prereq COLON_DIR
+fi
+
+test_expect_success COLON_DIR 'a file with the same (short) magic name exists' '
        : >":/bar" &&
        test_must_fail git add -n :/bar &&
        git add -n "./:/bar"