We do not accept GitHub pull requests (we use an instance of the Gerrit code review system instead).
To get started contributing to this project, clone the repository from its canonical location
git clone https://go.googlesource.com/gddo
or update the origin of your existing clone
git remote rm origin git remote add origin https://go.googlesource.com/gddo
then read the Contribution Guidelines to learn how to send patches using Gerrit.