$ git clone -n https://src.fedoraproject.org/rpms/kf5-grantleetheme.git /var/lib/mock/f45-build-14772-463/root/chroot_tmpdir/scmroot/kf5-grantleetheme
Cloning into '/var/lib/mock/f45-build-14772-463/root/chroot_tmpdir/scmroot/kf5-grantleetheme'...
$ git fetch origin bfd547abbddf01ba35320b53da52e5120e48582c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-grantleetheme
 * [new ref]         bfd547abbddf01ba35320b53da52e5120e48582c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfd547a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild