$ git clone -n https://src.fedoraproject.org/rpms/xq.git /var/lib/mock/f42-build-867074-174622/root/chroot_tmpdir/scmroot/xq
Cloning into '/var/lib/mock/f42-build-867074-174622/root/chroot_tmpdir/scmroot/xq'...
$ git fetch origin f1c63beb536c6f032170229c0600c9a9867d8d1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xq
 * [new ref]         f1c63beb536c6f032170229c0600c9a9867d8d1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1c63be Update to 1.3.0 upstream release