The "redo" command:

Usage: fossil undo ?OPTIONS? ?FILENAME...?
   or: fossil redo ?OPTIONS? ?FILENAME...?

The undo command reverts the changes caused by the previous command
if the previous command is one of the following:

   (1) fossil update             (5) fossil stash apply
   (2) fossil merge              (6) fossil stash drop
   (3) fossil revert             (7) fossil stash goto
   (4) fossil stash pop          (8) fossil clean  (*see note*)

Note: The "fossil clean" command only saves state for files less than
10MiB in size and so if fossil clean deleted files larger than that,
then "fossil undo" will not recover the larger files.

If FILENAME is specified then restore the content of the named
file(s) but otherwise leave the update or merge or revert in effect.
The redo command undoes the effect of the most recent undo.

If the -n|--dry-run option is present, no changes are made and instead
the undo or redo command explains what actions the undo or redo would
have done had the -n|--dry-run been omitted.

If the most recent command is not one of those listed as undoable,
then the undo command might try to restore the state to be what it was
prior to the last undoable command, or it might be a no-op.  If in
doubt about what the undo command will do, first run it with the -n
option.

A single level of undo/redo is supported.  The undo/redo stack
is cleared by the commit and checkout commands.  Other commands may
or may not clear the undo stack.

Future versions of Fossil might add new commands to the set of commands
that are undoable.

Options:
  -n|--dry-run   do not make changes but show what would be done

See also: commit, status