! [rejected] master -> master (fetch first) ! [rejected] master -> master (fetch first) error: failed to push some refs to 깃 주소 hint: Updates were rejected because the remote contains work that you do hint: not have locally. This is usually caused by another repository pushing hint: to the same ref. You may want to first integrate the remote changes hint: (e.g., 'git pull...') before pushing aga..
