Project directory appended twice

During perform, the fix for MRELEASE-457 changes the checkout directory by appending the checkout path, later the release manager appends it again in determineWorkingDirectory(). As a result maven cannot find the checked out project.
Please see attached log file with -X output, specifically line 1541 that shows the correct project path, however, when it comes to running the deploy command, it appends project path again as indicated by line 1553.