Hi Thanks for the suggestions. I will try my best. I am now working on my gspiceui package (which is in fact not a python package) But the master branch is just master, not debian/master Here debian/master is preferred https://wiki.debian.org/Python/GitPackaging But in this page the branch name is master. https://wiki.debian.org/PackagingWithGit What is the standard? Shall I change? git checkout -b debian/master git branch -D master ? Regards Gudjon