$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-here.git /var/lib/mock/f38-build-side-42-init-devel-628328-26370/root/chroot_tmpdir/scmroot/ocaml-ppx-here
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-628328-26370/root/chroot_tmpdir/scmroot/ocaml-ppx-here'...
$ git fetch origin 9db68fd434b67b08ab940fdac86dc32811b23cab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-here
 * [new ref]         9db68fd434b67b08ab940fdac86dc32811b23cab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9db68fd Rebuild OCaml packages for F38