例：使用在GitHub.com上Spoon-Knife项目

1、复制Spoon-Knife仓库

  在GitHub.com 仓库点击“Fork”按钮

2、Clone your fork（分支)

  复制fork到你本地机器上

  git clone https://github.com/username/Spoon-Knife.git

  #Clones your fork of the repository into the current directory in terminal

3、Configure remotes配置远端

  完成仓库复制后，它有一个默认称为origin的远端指向你在GitHub上的分支，而非最原始仓库。为跟踪最原始仓库，你必须添加另一个名为upstream远端

  $cd Spoon-Knife  

  # Changes the active directory in the prompt to the newly cloned

   "Spoon-Knife" directory

  $git remote add upstream https://github.com/octocat/Spoon-Knife.git

  # Assigns the original repository to a remote called "upstream"

git fetch upstream

  # Pulls in changes not present in your local repository, without modifying your files提取变化不会显示在你本地仓库里，不会改变你的文件



你还可以做更多的事


1、Push commits

$git push origin master

# Pushes commits to your remote repository stored on GitHub

上传文件到远端仓库


2、Pull in upstream changes提取upstream更新

$git fetch upstream

# Fetches any new changes from the original repository

git merge upstream/master

# Merges any changes fetched into your working files


pull和fetch区别：

$git pull upstream master

# Pulls commits from 'upstream' and stores them in the local repository

pull自动完成merge,并保存到你的仓库


$git fetch upstream

# Fetches any new commits from the original repository

$git merge upstream/master

# Merges any fetched commits into your working files



3、创建分支

$git branch mybranch

$git cheakout mybranch切换到分支

$git checkout master切换到主分支

$git merge mybranch 合并分支到主分支

$git branch -d mybranch删除分支


4、pull requests

如果你想对项目有所贡献，你可以发送给原作者pull request