$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-here.git /var/lib/mock/f42-build-3356270-45027/root/chroot_tmpdir/scmroot/ocaml-ppx-here
Cloning into '/var/lib/mock/f42-build-3356270-45027/root/chroot_tmpdir/scmroot/ocaml-ppx-here'...
$ git fetch origin 931ea0a6a9dd41519ced91ab13c37c949b679a66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-here
 * [new ref]         931ea0a6a9dd41519ced91ab13c37c949b679a66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 931ea0a Rebuild for ocaml-ppxlib 0.35.0