$ git clone -n https://src.fedoraproject.org/rpms/hiera.git /var/lib/mock/f45-build-13426-450/root/chroot_tmpdir/scmroot/hiera
Cloning into '/var/lib/mock/f45-build-13426-450/root/chroot_tmpdir/scmroot/hiera'...
$ git fetch origin bbba5cf6336bd16b177ac7990e6caf0e5caa6fd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hiera
 * [new ref]         bbba5cf6336bd16b177ac7990e6caf0e5caa6fd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbba5cf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild