$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-hash.git /var/lib/mock/f38-build-side-42-init-devel-748143-27661/root/chroot_tmpdir/scmroot/ocaml-ppx-hash
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-748143-27661/root/chroot_tmpdir/scmroot/ocaml-ppx-hash'...
$ git fetch origin 49e68e55f6f8d29b3b250fbbb577a1a2402b8ef8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-hash
 * [new ref]         49e68e55f6f8d29b3b250fbbb577a1a2402b8ef8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49e68e5 Rebuild OCaml packages for F38