$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-hash.git /var/lib/mock/f41-build-side-1-3078571-38917/root/chroot_tmpdir/scmroot/ocaml-ppx-hash
Cloning into '/var/lib/mock/f41-build-side-1-3078571-38917/root/chroot_tmpdir/scmroot/ocaml-ppx-hash'...
$ git fetch origin 48bca0d2df4543f15a6697f1b172aa78733824b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-hash
 * [new ref]         48bca0d2df4543f15a6697f1b172aa78733824b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 48bca0d Rebuild for ocaml-ppxlib 0.33.0