I have known that development of linux, git was done over email, And always wondered how PR worked there, but I never took time to know how actually it was done

I have known that development of linux, git was done over email, And always wondered how PR worked there, but I never took time to know how actually it was done. For someone like me this[0] looks like a good start. [0]: https://git-send-email.io/ https://git-send-email.io/