The "uv" command:

Usage: fossil unversioned SUBCOMMAND ARGS...
   or: fossil uv SUBCOMMAND ARGS..

Unversioned files (UV-files) are artifacts that are synced and are available
for download but which do not preserve history.  Only the most recent version
of each UV-file is retained.  Changes to an UV-file are permanent and cannot
be undone, so use appropriate caution with this command.

Subcommands:

   add FILE ...         Add or update an unversioned files in the local
                        repository so that it matches FILE on disk.
                        Use "--as UVFILE" to give the file a different name
                        in the repository than what it called on disk.
                        Changes are not pushed to other repositories until
                        the next sync.

   cat FILE ...         Concatenate the content of FILEs to stdout.

   edit FILE            Bring up FILE in a text editor for modification.

   export FILE OUTPUT   Write the content of FILE into OUTPUT on disk

   list | ls            Show all unversioned files held in the local
                        repository.

   revert ?URL?         Restore the state of all unversioned files in the
                        local repository to match the remote repository
                        URL.

                        Options:
                           -v|--verbose     Extra diagnostic output
                           -n|--dryrun      Show what would have happened

   remove|rm|delete FILE ...
                        Remove unversioned files from the local repository.
                        Changes are not pushed to other repositories until
                        the next sync.

   sync ?URL?           Synchronize the state of all unversioned files with
                        the remote repository URL.  The most recent version
                        of each file is propagate to all repositories and
                        all prior versions are permanently forgotten.

                        Options:
                           -v|--verbose     Extra diagnostic output
                           -n|--dryrun      Show what would have happened

   touch FILE ...       Update the TIMESTAMP on all of the listed files

Options:

  --mtime TIMESTAMP     Use TIMESTAMP instead of "now" for the "add",
                        "edit", "remove", and "touch" subcommands.