The "revert" command:
Usage: fossil revert ?OPTIONS? ?FILE ...?
Revert to the current repository version of FILE, or to
the baseline VERSION specified with -r flag.
If FILE was part of a rename operation, both the original file
and the renamed file are reverted.
Using a directory name for any of the FILE arguments is the same
as using every subdirectory and file beneath that directory.
Revert all files if no file name is provided.
If a file is reverted accidentally, it can be restored using
the "fossil undo" command.
-r|--revision VERSION Revert given FILE(s) back to given
See also: redo, undo, checkout, update