python - pip: pulling updates from remote git repository -

i installed scikit-learn github couple of weeks ago:

pip install git+git://github.com/scikit-learn/scikit-learn@master 

i went github , there have been several changes master branch since then.

how can update local installation of scikit-learn?

i tried pip install scikit-learn --upgrade got:

requirement up-to-date cleaning ... 

pip searches library in python package index. version newer newest 1 in there, pip won't update it.

you'll have reinstall git:

$ pip install git+git://github.com/scikit-learn/scikit-learn@master