First, download Luke’s REAL_mod_by_LukeRoss_v8_4_0.zip from his Patreon page here and extract it somewhere (must be this specific version).

(ignore the screenshot versions as they’re old)
(note: if your virus scanner doesn’t like it, it’s a false positive. You can see it’s clean here)
It will ask you where the Luke Ross mod is extracted and you’ll copy and past your folder here

Click “Start” and you’ll then have you copy of Luke Ross’s mod pack reverted to the old version. You can then copy this to your game like normal.

Luke’s GTA V mod can still be downloaded from his Github here:
https://github.com/LukeRoss00/gta5-real-mod
or