$ git clone -n https://src.fedoraproject.org/rpms/python-crank.git /var/lib/mock/f45-build-30168-643/root/chroot_tmpdir/scmroot/python-crank
Cloning into '/var/lib/mock/f45-build-30168-643/root/chroot_tmpdir/scmroot/python-crank'...
$ git fetch origin c55ae4491283ad62df7152ef1556b9319fd79887:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-crank
 * [new ref]         c55ae4491283ad62df7152ef1556b9319fd79887 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c55ae44 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild