This branch is reserved for the maintainer of the project. Instead use
git checkout -b <topic> to create "topic" branches to do
your work.
For example, if you are correcting a spelling error, do
git checkout -b fix-spelling-error-in-file and commit your work there.
Then submit a pull request for review.
Once a topic branch has been merged, you should not continue any additional work on it. Delete it and always base your topic branches off the master branch.