how to update forked repository in github code example
Example 1: update fork repository
git remote add upstream https://github.com/OriginalOwner/OriginalProject.git
git remote -v
git fetch upstream
git checkout master
git merge upstream/master
git push origin master
Example 2: update my fork repository at github
git remote add upstream https://github.com/whoever/whatever.git
git fetch upstream
git checkout master
git rebase upstream/master
Example 3: git pull updates from fork
$ cd github-services
$ git remote add upstream git://github.com/pjhyett/github-services.git
$ git fetch upstream
$ git merge upstream/master master
$ git rebase upstream/master
Example 4: update fork
git fetch upstream
git checkout master
git merge upstream/master
git push origin
Example 5: steps to sync branch to fork master?
$ git remote -v
> origin https://github.com/YOUR_USERNAME/YOUR_FORK.git (fetch)
> origin https://github.com/YOUR_USERNAME/YOUR_FORK.git (push)
Example 6: steps to sync branch to fork master?
$ git fetch upstream
> remote: Enumerating objects: 82, done.
> remote: Counting objects: 100% (82/82), done.
> remote: Compressing objects: 100% (44/44), done.
> remote: Total 91 (delta 53), reused 30 (delta 30), pack-reused 9
> Unpacking objects: 100% (91/91), done.
> From https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY
> * [new branch] master -> upstream/master