module BacklogKit
  class Client

    # Methods for the Git API
    module Git

      # Get list of git repositories
      #
      # @param project_id_or_key [Integer, String] Project id or project key
      # @return [BacklogKit::Response] List of git repositories
      def get_git_repositories(project_id_or_key)
        get('git/repositories', project_id_or_key: project_id_or_key)
      end
    end
  end
end

module BacklogKit
  class Client
    module Git
      def get_git_repositories(project_id_or_key)
        get('git/repositories', project_id_or_key: project_id_or_key)
      end
    end
  end
end

--- 
+++ 
@@ -1,6 +1,13 @@
 module BacklogKit
   class Client
+
+    # Methods for the Git API
     module Git
+
+      # Get list of git repositories
+      #
+      # @param project_id_or_key [Integer, String] Project id or project key
+      # @return [BacklogKit::Response] List of git repositories
       def get_git_repositories(project_id_or_key)
         get('git/repositories', project_id_or_key: project_id_or_key)
       end
Add documentation for the Git API
