[Python] Click help text shows 'dynamic' when an option has the default set to a lambda

I have this code in a CLI:

@click.option(
"--username",
default=lambda: os.environ.get("USER", None),
show_default=True,
help="User name for SSH configuration.",
)


When I invoke the CLI with --help option, I get this:

--username TEXT User name for SSH configuration. [default:
(dynamic)]


Is there a way to make click invoke the lambda function and show the actual username instead of (dynamic)? I know I can call that function before invoking the click decorator and pass that retrieved value as the default instead of lambda. I am trying to do better than that.

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