$ git clone -n https://src.fedoraproject.org/rpms/tilda.git /var/lib/mock/f41-build-side-1-2670634-29060/root/chroot_tmpdir/scmroot/tilda
Cloning into '/var/lib/mock/f41-build-side-1-2670634-29060/root/chroot_tmpdir/scmroot/tilda'...
$ git fetch origin 823ee427e2577d70b4bdab153c86d92d688c38d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tilda
 * [new ref]         823ee427e2577d70b4bdab153c86d92d688c38d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 823ee42 convert license to SPDX