docs/diff-options: clarify scope of diff-filter types

diff --git a/t/t5550-http-fetch-dumb.sh b/t/t5550-http-fetch-dumb.sh
index 2d3b1e9f937219b84069d9d0b1ce17129e87d110..87308cdced9af11365d5eb0644b9ac86fac21177 100755 (executable)
--- a/t/t5550-http-fetch-dumb.sh
+++ b/t/t5550-http-fetch-dumb.sh
@@ -34,6 +34,15 @@ test_expect_success 'clone http repository' '
        test_cmp file clone/file
 '
 
+test_expect_success 'list refs from outside any repository' '
+       cat >expect <<-EOF &&
+       $(git rev-parse master) HEAD
+       $(git rev-parse master) refs/heads/master
+       EOF
+       nongit git ls-remote "$HTTPD_URL/dumb/repo.git" >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'create password-protected repository' '
        mkdir -p "$HTTPD_DOCUMENT_ROOT_PATH/auth/dumb/" &&
        cp -Rf "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" \