git一般有很多分支，我们clone到本地的时候一般都是master分支，那么如何切换到其他分支呢？主要命令如下：

1. 查看远程分支

$ git branch -a 

~/mxnet$ git branch -a
* master
  remotes/origin/HEAD -> origin/master
  remotes/origin/master
  remotes/origin/nnvm
  remotes/origin/piiswrong-patch-1
  remotes/origin/v0.9rc1

• 可以看到，我们现在在master分支下

2. 查看本地分支

            ~/mxnet$ git branch
            * master

3. 切换分支

$ git checkout v0.9rc1
Branch v0.9rc1 set up to track remote branch v0.9rc1 from origin.
Switched to a new branch 'v0.9rc1'

＃已经切换到v0.9rc1分支了
$ git branch
  master
* v0.9rc1

＃切换回master分支
$ git checkout master
Switched to branch 'master'
Your branch is up-to-date with 'origin/master'.