$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-deriving-yaml.git /var/lib/mock/f39-build-1920092-42947/root/chroot_tmpdir/scmroot/ocaml-ppx-deriving-yaml
Cloning into '/var/lib/mock/f39-build-1920092-42947/root/chroot_tmpdir/scmroot/ocaml-ppx-deriving-yaml'...
$ git fetch origin f3794da02c8b3daf0e79d33716f2ceb083cde324:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-deriving-yaml
 * [new ref]         f3794da02c8b3daf0e79d33716f2ceb083cde324 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3794da Rebuild for ocaml-yaml 3.2.0