Do we know for sure that the hair is still happening? Last update I recall, ~80 pages and two months ago, was this post by jonh which seemed to basically say that he can’t do it all and has done all he can:
https://originaltrilogy.com/post/id/1400030/action/topic#1400030
As far as I know, the hair is still happening. Jonh applied a haircut and some subtle weight loss to Luke in basically every single shot it needed to be. When he said that he’s done all that he can, he was referring to one or two shots were the camera movement made it impossible to apply a mask. Specifically during the line, “A thousand generations…”
Somebody, (I think it might have been DominicCobb???) Addressed several small masking errors and provided screenshots to show where some minor fixes needed to be made. Jonh acknowledged the screenshots and said he’ll work on it. That’s the last we’ve heard on the matter.