Add Repository model to proxy request to Gitlab::Git::Repositoty and decorate…

app/models/repository.rb

+class Repository
+  attr_accessor :raw_repository
+
+  def initialize(path_with_namespace, default_branch)
+    @raw_repository = Gitlab::Git::Repository.new(path_with_namespace, default_branch)
+  end
+
+  def commit(id = nil)
+    commit = raw_repository.commit(id)
+    commit = Commit.new(commit) if commit
+    commit
+  end
+
+  def commits(ref, path = nil, limit = nil, offset = nil)
+    commits = raw_repository.commits(ref, path, limit, offset)
+    commits = decorate_commits(commits) if commits.present?
+    commits
+  end
+
+  def commits_between(target, source)
+    commits = raw_repository.commits_between(target, source)
+    commits = decorate_commits(commits) if commits.present?
+    commits
+  end
+
+  def method_missing(m, *args, &block)
+    @raw_repository.send(m, *args, &block)
+  end
+
+  def respond_to?(method)
+    return true if @raw_repository.respond_to?(method)
+
+    super
+  end
+
+  protected
+
+  def decorate_commits(commits)
+    commits.map { |c| Commit.new(c) }
+  end
+end