$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ptmap.git /var/lib/mock/f38-build-side-42-init-devel-661227-26630/root/chroot_tmpdir/scmroot/ocaml-ptmap
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-661227-26630/root/chroot_tmpdir/scmroot/ocaml-ptmap'...
$ git fetch origin 1b45ee0ca99bc433a0aa335f99b0477a3db12f38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ptmap
 * [new ref]         1b45ee0ca99bc433a0aa335f99b0477a3db12f38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b45ee0 Rebuild OCaml packages for F38