[github] GitHub - error: failed to push some refs to '[email protected]:myrepo.git'

I have faced the same issue and resolved as follows (if you have a project in local folder then follow the steps):

  1. create a new repo in guthub
  2. go to local folder and do "git init"
  3. git remote add origin (with your repo url) // simply copy from your repo
  4. git add -A
  5. git commit -m "your commit"
  6. git push -u origin master