$ git clone -n https://src.fedoraproject.org/rpms/fzf.git /var/lib/mock/f42-build-side-1-3583564-46889/root/chroot_tmpdir/scmroot/fzf
Cloning into '/var/lib/mock/f42-build-side-1-3583564-46889/root/chroot_tmpdir/scmroot/fzf'...
$ git fetch origin 6256b8a728c76b8a87d87fa280403660379972a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fzf
 * [new ref]         6256b8a728c76b8a87d87fa280403660379972a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6256b8a Update to 0.63.0 upstream release