What is the problem? Public key set up.
$ git push origin master To https://github.com/merrymaker14/uploadca.git ! [rejected] master -> master (fetch first) error: failed to push some refs to https://github.com/merrymaker14/uploadca.git' hint: Updates were rejected because the remote contains work that you do hint: not have locally. This is usually caused by another repository pushin hint: to the same ref. You may want to first integrate the remote changes hint: (eg, 'git pull ...') before pushing again. hint: See the 'Note about fast-forwards' in 'git push --help' for details.