目的
使用 rebase 命令代替 merge 命令。
好，我们回到了第一次合并前的时间点，并且我们想要将 master 中的更改集成到 greet 分支。
这次我们将使用 rebase 命令代替 merge 命令来从 master 分支中引入更改。
$ git checkout greet
$ git rebase master
$ git hist$ go greet
Switched to branch 'greet'
$
$ git rebase master
First, rewinding head to replay your work on top of it...
Applying: added Greeter class
Applying: hello uses Greeter
Applying: updated Rakefile
$
$ git hist
* 2fae0b2 2013-04-13 | Updated Rakefile (HEAD, greet) [Jim Weirich]
* 1c23048 2013-04-13 | Hello uses Greeter [Jim Weirich]
* 62d7ce0 2013-04-13 | Added greeter class [Jim Weirich]
* b59a8c2 2013-04-13 | Added README (master) [Jim Weirich]
* 96ee164 2013-04-13 | Added a Rakefile. [Jim Weirich]
* 0f36766 2013-04-13 | Moved hello.rb to lib [Jim Weirich]
* eb30103 2013-04-13 | Add an author/email comment [Jim Weirich]
* 1f7ec5e 2013-04-13 | Added a comment (v1) [Jim Weirich]
* 582495a 2013-04-13 | Added a default value (v1-beta) [Jim Weirich]
* 323e28d 2013-04-13 | Using ARGV [Jim Weirich]
* 9416416 2013-04-13 | First Commit [Jim Weirich]