git

• Git Flight Rules - use case based Git tutorial - https://github.com/k88hudson/git-flight-rules

create a new repository then duplicate your code from last project to it.

git clone --bare https://github.com/exampleuser/old-repository.git

cd old-repository.git
git push --mirror https://github.com/exampleuser/new-repository.git

cd ..
rm -rf old-repository.git

Source: https://help.github.com/articles/duplicating-a-repository/