It is very easy to sync forked repository but question is how ?
So for answer you need to follow 4 steps and you are good to go.
Go to your forked repository, you can see setting button click on it
.
After clicking on setting button you can see Webhooks & services option in left menu click on it.
Then you can see *Add Webhook Button* on right side just click on it.
After clicking Add Webhook Button, details page will get open, so in detail page yo can see *payload url*. Enter http://backstroke.us url in it.
Now If any commit goes in main repository, then pull request will come in your forked repository.
That's it enjoy :)
For more details go to backstroke repository
