$ git clone -n https://src.fedoraproject.org/rpms/perl-CPS.git /var/lib/mock/f45-build-22094-589/root/chroot_tmpdir/scmroot/perl-CPS
Cloning into '/var/lib/mock/f45-build-22094-589/root/chroot_tmpdir/scmroot/perl-CPS'...
$ git fetch origin 139ff09c7e70f25037cb5cfd9d676901608a3211:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CPS
 * [new ref]         139ff09c7e70f25037cb5cfd9d676901608a3211 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 139ff09 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild