$ git clone -n https://src.fedoraproject.org/rpms/hercules.git /var/lib/mock/f45-build-13402-450/root/chroot_tmpdir/scmroot/hercules
Cloning into '/var/lib/mock/f45-build-13402-450/root/chroot_tmpdir/scmroot/hercules'...
$ git fetch origin 23757f04a3ba8823646c6db212a4e70af7945a2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hercules
 * [new ref]         23757f04a3ba8823646c6db212a4e70af7945a2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23757f0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild