The "patch" command:
This command is used to create, view, and apply Fossil binary patches. A Fossil binary patch is a single (binary) file that captures all of the uncommitted changes of a check-out. Use Fossil binary patches to transfer proposed or incomplete changes between machines for testing or analysis.
- fossil patch create [DIRECTORY] FILENAME
 Create a new binary patch in FILENAME that captures all uncommitted changes in the check-out at DIRECTORY, or the current directory if DIRECTORY is omitted. If FILENAME is "-" then the binary patch is written to standard output.
- -f|--force
 - Overwrite an existing patch with the same name.
 
- fossil patch apply [DIRECTORY] FILENAME
 Apply the changes in FILENAME to the check-out at DIRECTORY, or in the current directory if DIRECTORY is omitted. Options:
- -f|--force
 - Apply the patch even though there are unsaved changes in the current check-out. Unsaved changes are reverted and permanently lost.
 - -n|--dryrun
 - Do nothing, but print what would have happened.
 - -v|--verbose
 - Extra output explaining what happens.
 
- fossil patch diff [DIRECTORY] FILENAME
 Show a human-readable diff for the patch. All the usual diff flags described at "fossil help diff" apply. In addition:
- -f|--force
 - Continue trying to perform the diff even if baseline information is missing from the current repository
 
- fossil patch push REMOTE-CHECKOUT
 Create a patch for the current check-out, transfer that patch to a remote machine (using ssh) and apply the patch there. The REMOTE-CHECKOUT is in one of the following formats:
DIRECTORY
- HOST:DIRECTORY
 - USER@HOST:DIRECTORY
 Command-line options:
- -f|--force
 - Apply the patch even though there are unsaved changes in the current check-out. Unsaved changes will be reverted and then the patch is applied.
 - --fossilcmd EXE
 - Name of the "fossil" executable on the remote
 - -n|--dryrun
 - Do nothing, but print what would have happened.
 - -v|--verbose
 - Extra output explaining what happens.
 
- fossil patch pull REMOTE-CHECKOUT
 Like "fossil patch push" except that the transfer is from remote to local. All the same command-line options apply.
- fossil patch view FILENAME
 View a summary of the changes in the binary patch FILENAME. Use "fossil patch diff" for detailed patch content.
- -v|--verbose
 - Show extra detail about the patch.