$ git clone -n https://src.fedoraproject.org/rpms/ocaml-qcheck.git /var/lib/mock/f42-build-872820-178263/root/chroot_tmpdir/scmroot/ocaml-qcheck
Cloning into '/var/lib/mock/f42-build-872820-178263/root/chroot_tmpdir/scmroot/ocaml-qcheck'...
$ git fetch origin 0d09092f192d24ed6d4835f50648a28b569b64c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-qcheck
 * [new ref]         0d09092f192d24ed6d4835f50648a28b569b64c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d09092 Rebuild for ocaml-ppxlib 0.35.0