Cloning 12.2 EBS
The 12.2 EBS cloning has been dramatically changed in the 12.2 version. The main concept still the same, (preclone, copy files, post clone), but the underlying logic was changed.
First you will not find Rapid Clone note for 12.2 on Oracle's Support site (The following document mention the 1383621.1 note, but is just a "rapid clone bug list" now, not a complete step by step note as the earlier notes were). You should open the "Oracle® E-Business Suite Setup Guide Release 12.2" document and read chapter 17 "Cloning Oracle E-Business Suite with Rapid Clone".