title: Install specific git commit with pip
body: <p>I'm developing a django app and I'm using pip to manage my requirements. How can I do to install a specific git's commit?</p>
  
  <p>In my case I need to install this commit:
  <a href="https://github.com/aladagemre/django-notification/commit/2927346f4c513a217ac8ad076e494dd1adbf70e1">https://github.com/aladagemre/django-notification/commit/2927346f4c513a217ac8ad076e494dd1adbf70e1</a></p>