git-rebase.txt: document behavioral differences between modes

diff --git a/commit.c b/commit.c
index b0e57cc4400964ad7dca8d37c5d4c10bf3979b51..0030e79940ff8564b5c8c5ebab462eb1bd745174 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -207,6 +207,9 @@ static void prepare_commit_graft(void)
 
        if (commit_graft_prepared)
                return;
+       if (!startup_info->have_repository)
+               return;
+
        graft_file = get_graft_file();
        read_graft_file(graft_file);
        /* make sure shallows are read */