git push origin main 1. non-fast-forward User > git push -u origin main To https://github.com/{repository url} ! [rejected] main -> main (non-fast-forward) error: failed to push some refs to 'https://github.com/{repository url}' hint: Updates were rejected because the tip of your current branch is behind hint: its remote counterpart. If you want to integrate the remote changes, hint: use 'git pu..