$ git clone -n https://src.fedoraproject.org/rpms/csmock.git /var/lib/mock/f45-build-5749-341/root/chroot_tmpdir/scmroot/csmock
Cloning into '/var/lib/mock/f45-build-5749-341/root/chroot_tmpdir/scmroot/csmock'...
$ git fetch origin d61ab4852e6b7d5b084ccba89a64d55c3a3872b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/csmock
 * [new ref]         d61ab4852e6b7d5b084ccba89a64d55c3a3872b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d61ab48 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild