$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-assert.git /var/lib/mock/f40-build-784281-133348/root/chroot_tmpdir/scmroot/ocaml-ppx-assert
Cloning into '/var/lib/mock/f40-build-784281-133348/root/chroot_tmpdir/scmroot/ocaml-ppx-assert'...
$ git fetch origin e207f9abfaee1955a585e794985b96a35d9d0179:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-assert
 * [new ref]         e207f9abfaee1955a585e794985b96a35d9d0179 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e207f9a Rebuild for changed ocamlx hashes