Rudder

It seems to be around l. 100 of system/distributePolicy/1.0/propagatePromises.cf

    # each run, update the hash files of ncf
    # these hashes are used by node to know if they should update their copy of ncf
    root_server.pass2::
      "${g.rudder_ncf_origin_common_hash}" 
        create        => "true",
        edit_defaults => empty,
        edit_line     => insert_lines("${ncf_common_sha_sum}"),
        comment       => "Update the hash of ncf common";

      "${g.rudder_ncf_origin_local_hash}" 
        create        => "true",
        edit_defaults => empty,
        edit_line     => insert_lines("${ncf_local_sha_sum}"),
        comment       => "Update the hash of ncf local";