$ git clone -n https://src.fedoraproject.org/rpms/ocaml-uucd.git /var/lib/mock/f41-build-855409-167132/root/chroot_tmpdir/scmroot/ocaml-uucd
Cloning into '/var/lib/mock/f41-build-855409-167132/root/chroot_tmpdir/scmroot/ocaml-uucd'...
$ git fetch origin 2fad5b790b83d7438adaad08cd058659e0509892:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-uucd
 * [new ref]         2fad5b790b83d7438adaad08cd058659e0509892 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fad5b7 Version 16.0.0