$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-cold.git /var/lib/mock/f41-build-side-1-3073598-38853/root/chroot_tmpdir/scmroot/ocaml-ppx-cold
Cloning into '/var/lib/mock/f41-build-side-1-3073598-38853/root/chroot_tmpdir/scmroot/ocaml-ppx-cold'...
$ git fetch origin f6f93a964b088226f472df0a6a477e765462a68e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-cold
 * [new ref]         f6f93a964b088226f472df0a6a477e765462a68e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6f93a9 Rebuild for ocaml-ppxlib 0.33.0