# File lib/gitlab_git/repository.rb, line 512
      def refs_hash
        # Initialize only when first call
        if @refs_hash.nil?
          @refs_hash = Hash.new { |h, k| h[k] = [] }

          rugged.references.each do |r|
            # Symbolic/remote references may not have an OID; skip over them
            target_oid = r.target.try(:oid)
            if target_oid
              sha = rev_parse_target(target_oid).oid
              @refs_hash[sha] << r
            end
          end
        end
        @refs_hash
      end