$ git clone -n https://src.fedoraproject.org/rpms/tuba.git /var/lib/mock/f41-build-850580-165462/root/chroot_tmpdir/scmroot/tuba
Cloning into '/var/lib/mock/f41-build-850580-165462/root/chroot_tmpdir/scmroot/tuba'...
$ git fetch origin f2467fbd26763ecff3e90c857b8700073853117d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tuba
 * [new ref]         f2467fbd26763ecff3e90c857b8700073853117d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2467fb Update to version 0.8.4 rhbz#2311295