$ git clone -n https://src.fedoraproject.org/rpms/cataclysm-dda.git /var/lib/mock/f40-build-801526-143811/root/chroot_tmpdir/scmroot/cataclysm-dda
Cloning into '/var/lib/mock/f40-build-801526-143811/root/chroot_tmpdir/scmroot/cataclysm-dda'...
$ git fetch origin 41ad99eda7ff19e0a36afbbc6d388a2fcd3ebc6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cataclysm-dda
 * [new ref]         41ad99eda7ff19e0a36afbbc6d388a2fcd3ebc6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41ad99e New release