title: Remove saved credentials from TortoiseGit
body: <p>My credentials are saved in TortoiseGit (using Wincred) but my password changed.<br>
  The only way for me to pull from the repository now is to remove the Credential Helper.</p>
  
  <p>How can I simply change the password?<br>
  Alternately, can I remove my credentials and save my new ones?</p>