Sadly I believe that this is faked.
The shot is a taken from a larger one of Arnold walking beside Harrison Ford, who is wearing a green flight suit, which you can just see on the right hand side. Other versions include two different "Han shot first" mock ups, and I found a third photo of the two of them, Ford wearing the same flight suit, while Arnold has on a blue jacket over the top of a plain black T-Shirt.
While I haven't been able to locate the actual original photo, I suspect that he has removed the jacket and is wearing just the plain black T-Shirt which others have them memed and uploaded as real.
ETA: As absolute proof that it's faked, the photo is from the set of
The Expendables 3, which was released in 2014!
ETA2: Here's the original photo...
https://www.slashfilm.com/patrick-hughes-the-raid-remake-update/