$ git clone -n https://src.fedoraproject.org/rpms/tuba.git /var/lib/mock/f41-build-846671-163174/root/chroot_tmpdir/scmroot/tuba
Cloning into '/var/lib/mock/f41-build-846671-163174/root/chroot_tmpdir/scmroot/tuba'...
$ git fetch origin cd669008f47b7acadca0d08025fde5c712bf262f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tuba
 * [new ref]         cd669008f47b7acadca0d08025fde5c712bf262f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd66900 Update to version 0.8.3 rhbz#2307949