I'm looking close as can be, and that's not Pilot Obi-Wan... Not that I see anyway.
First the boots are a dead give-away that they're Sam Jackson's unique styled footwear and not Kenobi's fairly simple boots. Next up, the torso is definitely not the same as it's lacking ball/socket articulation completely, so it's obviously an all-new sculpt (or borrowed from some completely separate figure, but I'm thinking new sculpt).
The sleeves, or what you can see extended beyond the outer robe, are concave and billowy. Obi's are similar, but not to this extent, and that's definitely new looking to me on Mace.... The tops of the feet feature leather strap looking things that aren't on any other separately sculpted foot as well, so again completely new.
The headsculpt I don't know. I can't say it's their best likeness but I think they've done far worse in the past, and that this is a passable likeness. Humans are tough to nail down for any sculptor... Look how many Han's we have and a lot of people still can't agree which is accurate to Ford. I think the Jackson sculpt is the prequal version of Han... Tough guy to get accurate for everyone. I think it's decent looking myself. Not perfect, but it works fine for me.
The figure itself though appears to be a 100% all-new sculpt, definitely nothing re-used there that I see.