$ git clone -n https://src.fedoraproject.org/rpms/grafana.git /var/lib/mock/f45-build-20326-569/root/chroot_tmpdir/scmroot/grafana
Cloning into '/var/lib/mock/f45-build-20326-569/root/chroot_tmpdir/scmroot/grafana'...
$ git fetch origin 3ce8a7223c7698675c19a4689d70986daf9aa451:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grafana
 * [new ref]         3ce8a7223c7698675c19a4689d70986daf9aa451 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ce8a72 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild