Error `Unknown version "1.0.2"` during database migration when upgrading COmanage Registry 1.0.0 to 1.0.2

In following the COmanage Registry upgrade procedure, the database migration step failed with the following output:

{{Welcome to CakePHP v2.7.6 Console
---------------------------------------------------------------
App : app
Path: /var/www/html/comanage-registry-1.0.2/app/
---------------------------------------------------------------
Current version: 1.0.0
Target version: 1.0.2
Unknown version "1.0.2"
ERROR: Upgrade failed}}

Nothing else was logged to the console or to the debug or error logs, even with verbose output enabled.