$ git clone -n https://src.fedoraproject.org/rpms/dkms.git /var/lib/mock/f41-build-side-1-3049436-37886/root/chroot_tmpdir/scmroot/dkms
Cloning into '/var/lib/mock/f41-build-side-1-3049436-37886/root/chroot_tmpdir/scmroot/dkms'...
$ git fetch origin 83d0eae933bd565d7d3b4afce0b52611fba9a5ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dkms
 * [new ref]         83d0eae933bd565d7d3b4afce0b52611fba9a5ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83d0eae Update to 3.1.1