Community manager from Perforce here. Basically it's what Sytse said; we do bi-directional replication between a p4 server and a git repo. You can carve off any

Community manager from Perforce here. Basically it's what Sytse said; we do bi-directional replication between a p4 server and a git repo. You can carve off any hunk of a p4 server and surface it as a git repo. What we've seen some people do is push a monorepo into a p4 server and then carve off smaller repos that are more tightly scoped. Everything still goes back into p4 though, so you can still get the benefits of a mono repo. The neat thing is that multiple git repos can consume the same pieces of a p4 server making code sharing between git repos seamless.