Grit clone example

gistfile1.rb

# Since Git is well structured, Grit uses a method missing (Grit::Git#method_missing) to 'systematically' execute Git commands:

require 'grit'
include Grit

gritty = Grit::Git.new('/tmp/filling-in')
gritty.clone({:quiet => false, :verbose => true, :progress => true, :branch => '37s'}, "git://github.com/cookbooks/cc-aws.git", "/tmp/cc-aws2")
#  => "Initialized empty Git repository in /tmp/cc-aws2/.git/\n"
Dir.entries('/tmp/cc-aws2').size
# => 10

I believe that this is simply a "magic" interface to standard git commands, so:

gritty.clone({:quiet => false, :verbose => true, :progress => true, :branch => '37s'}, "git://github.com/cookbooks/cc-aws.git", "/tmp/cc-aws2")

equates to the git command line:

git clone -v --progress -b 37s git://github.com/cookbooks/cc-aws.git /tmp/cc-aws2

So, if your git user is authenticated to clone from that repo, then you should be able to with the Ruby snippet just as if you were running the command line.