outside repository fatal error

From: Julia Lawall
Date: Sun Sep 20 2020 - 08:09:21 EST

The commit bcf4271d4bc3 ("checkpatch: allow not using -f with files that
are in git") in linux-next seems to cause checkpatch to fail on a file
containing a patch if that file is not in the directory containing the
Linux kernel. Is that intentional?