$ git clone -n https://src.fedoraproject.org/rpms/rumor.git /var/lib/mock/f45-build-35389-695/root/chroot_tmpdir/scmroot/rumor
Cloning into '/var/lib/mock/f45-build-35389-695/root/chroot_tmpdir/scmroot/rumor'...
$ git fetch origin 662941a1b340776be68df68170a41288b29438a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rumor
 * [new ref]         662941a1b340776be68df68170a41288b29438a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 662941a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild