Restore controlfile without catalog

The easiest is :

restore controlfile from autobackup

Also possible :

restore controlfile from "/bckdir/c-123-45"

If you use tape

run { 
  allocate channel c1 type 'SBT_TAPE' PARMS 'ENV=(TDPO_OPTFILE=...)'; 
  restore controlfile from "c-3635577900-20220330-02";
}