HZZ4L combination package
This package can be checked out with:
git clone https://github.com/HZZ4l/CombinationPy.git HZZ4L_CombinationPy
In the package directory, simply issue
git pull
To commit directly (you need write access to the repository):
git pull
[edit files]
Once you are ready to commit
git pull
git add [files to be added]
git commit -m ["commit message"] [files to be added]
git push origin master
Otherwise you can make a fork of the repository, develop therein, and make a pull request in the same way as for CMSSW.