$ git clone -n https://src.fedoraproject.org/rpms/libxo.git /var/lib/mock/f41-build-side-1-2647747-27311/root/chroot_tmpdir/scmroot/libxo
Cloning into '/var/lib/mock/f41-build-side-1-2647747-27311/root/chroot_tmpdir/scmroot/libxo'...
$ git fetch origin 165e9d7f3127dd26f0d258f24c81fca2232dade1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxo
 * [new ref]         165e9d7f3127dd26f0d258f24c81fca2232dade1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 165e9d7 convert license to SPDX