$ git clone -n https://src.fedoraproject.org/rpms/revelation.git /var/lib/mock/f45-build-34495-687/root/chroot_tmpdir/scmroot/revelation
Cloning into '/var/lib/mock/f45-build-34495-687/root/chroot_tmpdir/scmroot/revelation'...
$ git fetch origin 46455cfe05c4fb19258725dc28da73ee489a3761:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/revelation
 * [new ref]         46455cfe05c4fb19258725dc28da73ee489a3761 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46455cf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild