$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv.git /var/lib/mock/f38-build-side-42-init-devel-753073-27663/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-753073-27663/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv'...
$ git fetch origin 41ab3b84350c85fc86b0180ca3da0bb749c88c9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv
 * [new ref]         41ab3b84350c85fc86b0180ca3da0bb749c88c9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41ab3b8 Rebuild OCaml packages for F38