$ git clone -n https://src.fedoraproject.org/rpms/perftest.git /var/lib/mock/f45-build-21544-586/root/chroot_tmpdir/scmroot/perftest
Cloning into '/var/lib/mock/f45-build-21544-586/root/chroot_tmpdir/scmroot/perftest'...
$ git fetch origin ae25682ccf61c9a42b6f83a0236a7bdb05b40068:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perftest
 * [new ref]         ae25682ccf61c9a42b6f83a0236a7bdb05b40068 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae25682 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild