How to exit from adop phase=prepare

In EBS 12.2.X. is there a method to exit from a prepare phase without having to perform the cleanup and fs_clone phase?

-- in case no patches have been applied and only the prepare has been opened

Or is it necessary to do the abort and then the cleanup and fs_clone?

or example:

$ adop phase=prepare
$ adop phase=apply patches=123456
$ -- request other patch as prerequisite
$ -- then we want to exit from the prepare for other insights

Thanks in advance for your suggestions.

Alberto