Well, if these humans can cheat by taking whatever needed degree of liberty in copycat attitude to fit in the budget, I guess that a simple `git clone https://gcc.gnu.org/git/gcc.git SomeLocalDir` is as close to $0 as one can hope to either reach. And it would end up being far more functional and reliable. But I get that big-corp overlords and their wanna-match-KPI minions will prefer an "clean-roomed" code base.