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 one or more unversioned files in
                          the local repository so that they match FILEs
                          on disk. Changes are not pushed to other
                          repositories until the next sync.

   add FILE --as UVFILE   Add or update a single file named FILE on disk
                          and UVFILE in the repository unversioned file
                          namespace. This variant of the 'add' command allows
                          the name to be different in the repository versus
                          what appears on disk, but it only allows adding
                          a single file at a time.

   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 propagated 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.