Ruby on rails Rails3插件安装声明一个特定的分支

Ruby on rails Rails3插件安装声明一个特定的分支,ruby-on-rails,ruby,git,github,Ruby On Rails,Ruby,Git,Github,我想从git repo上的某个特定分支安装,如何安装?对于插件: rails plugin install git://github.com/user/project.git -r branch_name 作为gem,在gemfile中声明如下内容: gem "project", :git => "git://github.com/user/project.git", :branch => "branch_name"

我想从git repo上的某个特定分支安装,如何安装?

对于插件:

rails plugin install git://github.com/user/project.git -r branch_name
作为gem,在
gemfile
中声明如下内容:

gem "project", :git => "git://github.com/user/project.git", :branch => "branch_name"