t/t4013/diff.log_-SF_main_--max-count=1

$ git log -SF main --max-count=1
commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
Author: A U Thor <author@example.com>
Date:   Mon Jun 26 00:02:00 2006 +0000

    Third
$