So how do the Russians know that the code they see is the one generating the binaries sold in Russia? Maybe this is more about training and retaining Russian t

So how do the Russians know that the code they see is the one generating the binaries sold in Russia? Maybe this is more about training and retaining Russian tech talent, creating friction for foreign vendors, and spreading a proto-fascist FUD and distrust of governments all over the world. Because yes, I would think inspecting binaries (probably secretly) would be more productive in pursuit of the stated goal.