$ git clone -n https://src.fedoraproject.org/rpms/ocaml-bin-prot.git /var/lib/mock/f38-build-side-42-init-devel-609942-26263/root/chroot_tmpdir/scmroot/ocaml-bin-prot
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-609942-26263/root/chroot_tmpdir/scmroot/ocaml-bin-prot'...
$ git fetch origin d9e3d8990f726f7e51ed36075df8c40ec93c32fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-bin-prot
 * [new ref]         d9e3d8990f726f7e51ed36075df8c40ec93c32fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9e3d89 Bump release and rebuild