packfile: keep prepare_packed_git() private

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index dc98b4bc6dc7aab41eca38d9e1086ad2b6701fd3..664a3a4e4e9b81d3e017c22414b0bbe2ef25b83a 100755 (executable)
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -1253,7 +1253,10 @@ run_with_limited_open_files () {
        (ulimit -n 32 && "$@")
 }
 
-test_lazy_prereq ULIMIT_FILE_DESCRIPTORS 'run_with_limited_open_files true'
+test_lazy_prereq ULIMIT_FILE_DESCRIPTORS '
+       test_have_prereq !MINGW,!CYGWIN &&
+       run_with_limited_open_files true
+'
 
 test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction creating branches does not burst open file limit' '
 (