原文在此, 建议阅读, 我把关键步骤抽出来了, 方便概览

(也就是add remote upstream, fetch upstream, rebase, 再push)

Step 1: Forking a repo

git clone https://github.com/nitin-test/blog-example-fork.git
git remote add upstream https://github.com/nitstorm/blog-example.git
git remote
git remote show origin
git remote show upstream

Step 2: Making changes and submitting Pull Requests

git checkout -b word-addition
git commit -am "Adds the word memory"
git push origin word-addition
# 网页端发起merge到master

Step 3: Keeping the forked repo synced with the main repo

# 确保你是在master分支
git checkout master
git fetch upstream
git rebase upstream/master
git push origin master