$ git clone -n https://src.fedoraproject.org/rpms/perl-Log-Message.git /var/lib/mock/f45-build-24523-604/root/chroot_tmpdir/scmroot/perl-Log-Message
Cloning into '/var/lib/mock/f45-build-24523-604/root/chroot_tmpdir/scmroot/perl-Log-Message'...
$ git fetch origin 435750bed0075eb0d82716b4eb4827b235c0b347:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Log-Message
 * [new ref]         435750bed0075eb0d82716b4eb4827b235c0b347 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 435750b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild