$ git clone -n https://src.fedoraproject.org/rpms/ocaml-uutf.git /var/lib/mock/f38-build-side-42-init-devel-686702-26759/root/chroot_tmpdir/scmroot/ocaml-uutf
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-686702-26759/root/chroot_tmpdir/scmroot/ocaml-uutf'...
$ git fetch origin ef416d154a542e2ac842098aecdedfe990d5194f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-uutf
 * [new ref]         ef416d154a542e2ac842098aecdedfe990d5194f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef416d1 Rebuild OCaml packages for F38