am: improve author-script error reporting

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 40844870cfb158b014ee5ea10517c27349e09133..247881189fde2a910bbd993342bb74fe10e06b0e 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -1233,6 +1233,7 @@ static int clone_submodule(const char *path, const char *gitdir, const char *url
        if (gitdir && *gitdir)
                argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
 
+       argv_array_push(&cp.args, "--");
        argv_array_push(&cp.args, url);
        argv_array_push(&cp.args, path);