Override the author cert for a commit; normally, the author is the
local name of the key used for the commit. See
get_author, --key,
get_local_key_name.
--branch
Specify the branch for a command. This normally defaults to the
workspace branch.
--date
Override the date cert for a commit. The date defaults to the current
calendar time.
--message string
Set the commit changelog message, as a string. Each command that does
a commit has a different default for the message.
--message-file filename
Set the commit changelog message, as a file. Each command that does
a commit has a different default for the message.
--[no-]update
If --update is given, and the command is executed in a
workspace, the workspace is updated to the new head of the workspace
branch if the workspace was at a head, and the command makes a new
head of the workspace branch.