如果没有clone，先clone
$ git clone ...
查看远程分支
``
$ git branch -a
- master
remotes/origin/HEAD -> origin/master
remotes/origin/Release
remotes/origin/master
切换到 origin/Release分支，并在本地新建分支 myRelease
``
$ git checkout -b myRelease origin/Release
Branch myRelease set up to track remote branch Release from origin.
Switched to a new branch 'myRelease'