revert all changes and go back to original state

Hi all, 

I have a github fork I created from Gradle. 

The original gradle is here: git://github.com/gradle/gradle.git And my fork is here: http://github.com/HamletDRC/gradle

I made a bunch of changes and committed. 

Now I want to revert everything I have back to be 100% in sync with the main gradle repo.

How do I do that? 

----- -- Hamlet D'Arcy