...
- Create a directory (anywhere of your choosing) on the local machine
- Use git clone <url to github repository>
- if you get a cloning or password error, enter the following command: git config --global core.askpass, then repeat step 2
- You don't have to use git fetch < branch>
- Read more at especially the paragraph headed Fetching and Pulling from Your Remotes
- Once the clone has completed you can edit the content as normal
...