Action Updates the clone folder so that it contains all the files in the original folder.
Two passes are made. First the clone folder is traversed to see if it's missing any files in the original. Any missing files are copied into the clone. Any files or sub-folders that were modified more recently than the files in the clone are also copied. In the second pass, the clone folder is traversed to see if it contains any files or sub-folders that don't exist in the original.