$ git clone -n https://src.fedoraproject.org/rpms/florence.git /var/lib/mock/f45-build-9083-398/root/chroot_tmpdir/scmroot/florence
Cloning into '/var/lib/mock/f45-build-9083-398/root/chroot_tmpdir/scmroot/florence'...
$ git fetch origin 79caf0159a5b80b3ff83fa6f2ed2bc130584aca6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/florence
 * [new ref]         79caf0159a5b80b3ff83fa6f2ed2bc130584aca6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79caf01 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild