I can't understand what an organization could do to reduce yak shaving. If task X is required, and X is blocked by task Y, and Y is blocked by Z, then task Z is

I can't understand what an organization could do to reduce yak shaving. If task X is required, and X is blocked by task Y, and Y is blocked by Z, then task Z is required too. That's yak shaving, and I don't know how a github organization could do anything to help.