git request-pull from local branch to remote master

If you developed your feature branch locally, you just have to use:

git request-pull origin/master feature/awesomeFeature

This will only give you a summary of the changes. If you want every detail, remember to add -p (for patch) to your command line.

Pull requests aren't actually implemented within git itself, so you will need another system to sit on top of git. If you want to host your repository yourself, you can use software such as GitLab to manage your repo and allow you to make pull requests.