$ git clone -n https://src.fedoraproject.org/rpms/x509watch.git /var/lib/mock/f45-build-38583-725/root/chroot_tmpdir/scmroot/x509watch
Cloning into '/var/lib/mock/f45-build-38583-725/root/chroot_tmpdir/scmroot/x509watch'...
$ git fetch origin d59d6c3bbdb9cc9b202b85e570ab02374b7a4167:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x509watch
 * [new ref]         d59d6c3bbdb9cc9b202b85e570ab02374b7a4167 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d59d6c3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild