$ git clone -n https://src.fedoraproject.org/rpms/ocaml-merlin.git /var/lib/mock/f40-build-1495788-23855/root/chroot_tmpdir/scmroot/ocaml-merlin
Cloning into '/var/lib/mock/f40-build-1495788-23855/root/chroot_tmpdir/scmroot/ocaml-merlin'...
$ git fetch origin 1d7d302acf48e38c605a1813d199a6cd4afd8bda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-merlin
 * [new ref]         1d7d302acf48e38c605a1813d199a6cd4afd8bda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d7d302 Version 4.16