$ git clone -n https://src.fedoraproject.org/rpms/ocaml-zed.git /var/lib/mock/f39-build-1639948-40129/root/chroot_tmpdir/scmroot/ocaml-zed
Cloning into '/var/lib/mock/f39-build-1639948-40129/root/chroot_tmpdir/scmroot/ocaml-zed'...
$ git fetch origin b3b094edb5e15780c0b1e1a38a2e11ea5d5d64bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-zed
 * [new ref]         b3b094edb5e15780c0b1e1a38a2e11ea5d5d64bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3b094e Version 3.2.3