https://help.github.com/articles/syncing-a-fork/
https://help.github.com/articles/configuring-a-remote-for-a-fork/
git clone https://github.com/WisWang/website.git
git remote -v
git remote add upstream https://github.com/kubernetes/website.git
git fetch upstream
git merge upstream/master
vim content/en/docs/reference/setup-tools/kubeadm/kubeadm-init.md
git add content/en/docs/reference/setup-tools/kubeadm/kubeadm-init.md
git add *
git commit -m "keep repo update with offcial master"
git push
Sync a fork of a repository to keep it up-to-date
原文：https://www.cnblogs.com/WisWang/p/9405577.html