Relationship between fork and central repos

Feb 29, 2012 at 7:56 AM

I wonder, if I create a fork, how do I keep the new fork repo synchronized with central repo, I mean, when somebody check-in some change into central repo, do I see it with pull request on my fork repo?

Asking because as I can see, the fork it's clone of the central repo, now if I clone fork repo to my local computer, I have clone of the clone, so if I don't have an access to the original fork repo, how can I pull changes from central repo or changes commited to central repo are triggering pull on forks?