Error: To https://github.com/hbrunn/OpenUpgrade ! refs/heads/documentation:refs/heads/documentation [rejected] (fetch first) Done Pushing to https://github.com/hbrunn/OpenUpgrade POST git-receive-pack (110 bytes) error: failed to push some refs to 'https://github.com/hbrunn/OpenUpgrade' hint: Updates were rejected because the remote contains work that you do not hint: have locally. This is usually caused by another repository pushing to hint: the same ref. If you want to integrate the remote changes, use hint: 'git pull' before pushing again. hint: See the 'Note about fast-forwards' in 'git push --help' for details.