$ git clone -n https://src.fedoraproject.org/rpms/ocaml-sha.git /var/lib/mock/f40-build-739790-109290/root/chroot_tmpdir/scmroot/ocaml-sha
Cloning into '/var/lib/mock/f40-build-739790-109290/root/chroot_tmpdir/scmroot/ocaml-sha'...
$ git fetch origin 52e8d30167981453e03cb5499a62fddfb872e94e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-sha
 * [new ref]         52e8d30167981453e03cb5499a62fddfb872e94e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52e8d30 OCaml 5.1 rebuild for Fedora 40