submodule: try harder to fetch needed sha1 by direct fetching sha1

diff --git a/builtin/commit.c b/builtin/commit.c
index d054f849606b248a82f7b29103308feab36ca9e9..89bf6ad38abbbee068ca29bad2ce2a4b728fa388 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -761,7 +761,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                hook_arg2 = "";
        }
 
-       s->fp = fopen(git_path(commit_editmsg), "w");
+       s->fp = fopen_for_writing(git_path(commit_editmsg));
        if (s->fp == NULL)
                die_errno(_("could not open '%s'"), git_path(commit_editmsg));