$ git clone -n https://src.fedoraproject.org/rpms/erlang-eradius.git /var/lib/mock/f41-build-side-1-2811247-32927/root/chroot_tmpdir/scmroot/erlang-eradius
Cloning into '/var/lib/mock/f41-build-side-1-2811247-32927/root/chroot_tmpdir/scmroot/erlang-eradius'...
$ git fetch origin a72ad24b071a4ef6728bddd1e796284fff126561:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-eradius
 * [new ref]         a72ad24b071a4ef6728bddd1e796284fff126561 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a72ad24 Cosmetic changes