$ git clone -n https://src.fedoraproject.org/rpms/rsyslog.git /var/lib/mock/f41-build-855680-167300/root/chroot_tmpdir/scmroot/rsyslog
Cloning into '/var/lib/mock/f41-build-855680-167300/root/chroot_tmpdir/scmroot/rsyslog'...
$ git fetch origin c0edcc84516eb9141725f718e465c0d6d79d846a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rsyslog
 * [new ref]         c0edcc84516eb9141725f718e465c0d6d79d846a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0edcc8 Rebuild Resolves: rhbz#2316361