$ git clone -n https://src.fedoraproject.org/rpms/R-lpSolve.git /var/lib/mock/f45-build-6200-347/root/chroot_tmpdir/scmroot/R-lpSolve
Cloning into '/var/lib/mock/f45-build-6200-347/root/chroot_tmpdir/scmroot/R-lpSolve'...
$ git fetch origin 932c39c49bd7ed3b711547a2a3faef8096e93b50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-lpSolve
 * [new ref]         932c39c49bd7ed3b711547a2a3faef8096e93b50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 932c39c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild