> Not sure what to you mean by 'fork&clone&submit&pr including 3rd party submodules'.

Sometimes a 3rd party library needs a fix, and you want to fork it, add your changes, and run with it like that until your changes land in the upstream.

Last time I had to deal with it was a PITA, because libraries were fully qualified, and now I wanted to make an override. In Rust I would use https://doc.rust-lang.org/cargo/reference/overriding-depende...