title: SourceTree - git: fatal: remote error: Repository not found
body: <p>I just signed up for a github account at work and created a new repository. I ran a few git commands over command line and everything worked fine. </p>
  
  <pre><code>1. git init 
  2. git add .
  3. git commit -m "first commit"
  4. git remote add origin https://github.com/username/project.git
  </code></pre>
  
  <p>Then, when I added the working copy from sourcetree and clicked the Fetch button,  i get "error: Repository Not Found". I try push and pull and i get the same error.  I've been using sourcetree with my bitbucket and github repositories for a few months now but i've never had this problem. Has anyone had similar issues?</p>