[remote rejected] master -> master (pre-receive hook declined) code example

Example 1: ! [rejected] master -> master (fetch first) error: failed to push some refs to '

git init
git add README.md
git add .
git commit -m "first commit"
git remote add origin https://github.com/userName/repoName.git
git push --force origin master

Example 2: ! [rejected] master -> master (fetch first)

git fetch origin master
git merge origin master

Example 3: Can't push refs to remote. Try running 'Pull' first to integrate your changes.

To fix this go to
http://github.com/settings/emails

and unmark the box: Keep my email addresses private