How to install Python package from GitHub? [duplicate]
You need to use the proper git URL:
pip install git+https://github.com/jkbr/httpie.git#egg=httpie
Also see the VCS Support section of the pip documentation.
Don’t forget to include the
egg=<projectname> part to explicitly name the project; this way pip can track metadata for it without having to have run the setup.py script.