$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-base.git /var/lib/mock/f39-build-2048545-48994/root/chroot_tmpdir/scmroot/ocaml-ppx-base
Cloning into '/var/lib/mock/f39-build-2048545-48994/root/chroot_tmpdir/scmroot/ocaml-ppx-base'...
$ git fetch origin 496be544d0df9f11f9c84361bfef3a35644f0d7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-base
 * [new ref]         496be544d0df9f11f9c84361bfef3a35644f0d7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 496be54 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild