$ git clone -n https://src.fedoraproject.org/rpms/ocaml-lambda-term.git /var/lib/mock/f38-build-side-42-init-devel-591337-26143/root/chroot_tmpdir/scmroot/ocaml-lambda-term
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-591337-26143/root/chroot_tmpdir/scmroot/ocaml-lambda-term'...
$ git fetch origin 27e1820de0cea671a76744ee4ed9d476d286de77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-lambda-term
 * [new ref]         27e1820de0cea671a76744ee4ed9d476d286de77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27e1820 Rebuild OCaml packages for F38