$ git clone -n https://src.fedoraproject.org/rpms/ballerburg.git /var/lib/mock/f41-build-side-1-2632191-25777/root/chroot_tmpdir/scmroot/ballerburg
Cloning into '/var/lib/mock/f41-build-side-1-2632191-25777/root/chroot_tmpdir/scmroot/ballerburg'...
$ git fetch origin c342336891da979a324f8180557ed6b9495ea158:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ballerburg
 * [new ref]         c342336891da979a324f8180557ed6b9495ea158 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c342336 convert GPLv3+ license to SPDX