git error Updates were rejected because the tip of your current branch is behind its remote counterpart. Integrate the remote changes (e.g. 'git pull ...') before pushing again. Cause First, I already had a remote origin.$ git push -u origin mainTo github.com:mellamonaranja/PrefixSpan.git ! [rejected] main -> main (non-fast-forward)error: failed to push some refs to 'git@github.com:mella..