git push heroku master Write failed: Connection reset by peer

I am getting this error when running this command ‘git push heroku master’

Write failed: Connection reset by peer
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

I followed the instructions given from heroku site. Here is the link https://devcenter.heroku.com/articles/getting-started-with-rails3

Git Baby is a git and github fan, let's start git clone.