$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppxlib.git /var/lib/mock/f40-build-2186856-51374/root/chroot_tmpdir/scmroot/ocaml-ppxlib
Cloning into '/var/lib/mock/f40-build-2186856-51374/root/chroot_tmpdir/scmroot/ocaml-ppxlib'...
$ git fetch origin b55b04f56f0530b30444e02030382c5df3dd9f4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppxlib
 * [new ref]         b55b04f56f0530b30444e02030382c5df3dd9f4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b55b04f OCaml 5.1.1 + s390x code gen fix for Fedora 40