Forking a Github repo to Bitbucket and maintaining synced updates

github-to-bitbucket

Go to Bitbucket and create a new repository (its better to have an empty repo)
    git clone [email protected]:abc/myforkedrepo.git
    cd myforkedrepo
    
** Make sure you do not create a README **

Now add Github repo as a new remote in Bitbucket called "sync"
    git remote add sync [email protected]:def/originalrepo.git

Verify what are the remotes currently being setup for "myforkedrepo". This following command should show "fetch" and "push" for two remotes i.e. "origin" and "sync"
    git remote -v

Now do a pull from the "master" branch in the "sync" remote 
    git pull sync master
    git pull sync master --allow-unrelated-histories
    
If you are up-to-date, you should expect the following output: 

git pull sync master --allow-unrelated-histories
From github.com:def/originalrepo
 * branch            master     -> FETCH_HEAD
Already up to date.

Setup a local branch called "github" track the "sync" remote's "master" branch
    git branch --track github sync/master

Now push the local "master" branch to the "origin" remote in Bitbucket.
    git push -u origin master
    

Courtesy: 
    http://stackoverflow.com/questions/8137997/forking-from-github-to-bitbucket
    https://gist.github.com/sangeeths/9467061