$ git clone -n https://src.fedoraproject.org/rpms/aribb25.git /var/lib/mock/f41-build-860110-168801/root/chroot_tmpdir/scmroot/aribb25
Cloning into '/var/lib/mock/f41-build-860110-168801/root/chroot_tmpdir/scmroot/aribb25'...
$ git fetch origin bff59cc2d41e777f119e2214ebf0e079cb594a6a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aribb25
 * [new ref]         bff59cc2d41e777f119e2214ebf0e079cb594a6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bff59cc Initial import