$ git clone -n https://src.fedoraproject.org/rpms/ocaml-curl.git /var/lib/mock/f40-build-2068458-49293/root/chroot_tmpdir/scmroot/ocaml-curl
Cloning into '/var/lib/mock/f40-build-2068458-49293/root/chroot_tmpdir/scmroot/ocaml-curl'...
$ git fetch origin b7f7fd488b50a536fc4a9959ff336146eaaaeac2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-curl
 * [new ref]         b7f7fd488b50a536fc4a9959ff336146eaaaeac2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7f7fd4 Bump release and rebuild