# File lib/gitlab_git/tree.rb, line 13
        def where(repository, sha, path = nil)
          path = nil if path == '' || path == '/'

          commit = repository.lookup(sha)
          root_tree = commit.tree

          tree = if path
                   id = Tree.find_id_by_path(repository, root_tree.oid, path)
                   if id
                     repository.lookup(id)
                   else
                     []
                   end
                 else
                   root_tree
                 end

          tree.map do |entry|
            Tree.new(
              id: entry[:oid],
              root_id: root_tree.oid,
              name: entry[:name],
              type: entry[:type],
              mode: entry[:filemode],
              path: path ? File.join(path, entry[:name]) : entry[:name],
              commit_id: sha,
            )
          end
        end