$ git clone -n https://src.fedoraproject.org/rpms/bids-schema.git /var/lib/mock/f42-bootstrap-3462112-45558/root/chroot_tmpdir/scmroot/bids-schema
Cloning into '/var/lib/mock/f42-bootstrap-3462112-45558/root/chroot_tmpdir/scmroot/bids-schema'...
$ git fetch origin 2fa87b4d6e64a10c7658c0c180e32f9932933f89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bids-schema
 * [new ref]         2fa87b4d6e64a10c7658c0c180e32f9932933f89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fa87b4 Update to 1.0.4 (close RHBZ#2353951)