Can't override ratchetFrom on Maven command-line

[mkhl]

I have a maven project that uses the spotless plugin and configures <ratchetFrom>origin/main</ratchetFrom>.

I'd like to be able to override that settings from the command-line. The spotless:check and spotless:apply goals both advertise accepting a ratchetFrom parameter (visible for example with mvn help:describe -Dplugin=spotless -Dgoal=check -Ddetail, but undocumented), but mvn spotless:check -DratchetFrom=NONE uses the ratchetFrom configuration from the POM.

I believe this is caused by AbstractSpotlessMojo discarding the NONE value before checking whether it overrides the configuration, presumably treating it as if the used hadn't provided it.