Are you referring to gl-sdk4-macclone? It is system software. You may not be able to reinstall it, it has not been uploaded to the repository.
it isn’t use other plug-ins. it only set MAC in OpenWrt. You also can do it in the page of LuCI:
Note: You need to find the corresponding device in the “Interface” tab. LAN always use br-lan, but WAN don’t always use eth0.