$ git clone -n https://src.fedoraproject.org/rpms/kollision.git /var/lib/mock/f41-build-side-1-2647425-27302/root/chroot_tmpdir/scmroot/kollision
Cloning into '/var/lib/mock/f41-build-side-1-2647425-27302/root/chroot_tmpdir/scmroot/kollision'...
$ git fetch origin a6a684c015ccc5f617bb2afc2131201f702e637e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kollision
 * [new ref]         a6a684c015ccc5f617bb2afc2131201f702e637e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6a684c convert license to SPDX