$ git clone -n https://src.fedoraproject.org/rpms/R-matrixStats.git /var/lib/mock/f40-build-789489-135730/root/chroot_tmpdir/scmroot/R-matrixStats
Cloning into '/var/lib/mock/f40-build-789489-135730/root/chroot_tmpdir/scmroot/R-matrixStats'...
$ git fetch origin 319167fcbf25596878e3e94551babbe11086d2f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-matrixStats
 * [new ref]         319167fcbf25596878e3e94551babbe11086d2f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 319167f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild