I took the comment as referring to hosting just a git repo on a public server. If you are working on a private project a simple option is to get a cheap VPS, give all your developers user accounts, and clone the repo into a shared folder. Everyone can pull and push with ssh and you can use Trello or whatever for issue tracking. Certainly that doesn't cover every use case, but it's worth being aware of the option and not feeling that you can't use git unless you pay github or spend a lot of time setting up a self-hosted clone of github.