I was able to clone a copy of this repo over HTTPS authenticated. I\'ve made some commits and want to push back out to the GitHub server. Using Cygwin on Windows 7 x64.
Just add you username into url like this : https://islam9@github.com/islam9/bootstrap-rtl
please check: http://islamkhalil.wordpress.com/2012/12/06/github-error-pushing-to-git-returning-error-code-403-fatal/