Unfortunately, it is impossible to learn how to use update_chrooted by running it. Both the man page and the help message (which are identical) contain no useful information on the command arguments. Help needs to be updated, or a link should be placed to a page, where a user can find more information on how to invoke the command.
# update_chrooted -V |head -1 update_chrooted version 0.3.1 # update_chrooted -l List of registered types: all conf lib