Error: To https://github.com/landamessenger/zstandard ! refs/heads/master:refs/heads/master [rejected] (non-fast-forward) Done Pushing to https://github.com/landamessenger/zstandard error: failed to push some refs to 'https://github.com/landamessenger/zstandard' hint: Updates were rejected because the tip of your current branch is behind hint: its remote counterpart. Integrate the remote changes (e.g. hint: 'git pull ...') before pushing again. hint: See the 'Note about fast-forwards' in 'git push --help' for details.