The v4.0.1 tag is on wrong commit. If I checkout tag v4.0.1 and try and compile, I get v4.0.2-SNAPSHOT as the version. If I checkout v4.0.1, it should result in v4.0.1.

v4.0.1 tag should have been on commit 79bbb1a.

I see similar commit from 3 weeks ago against other versions. v4.0.0 tag has version set to v4.0.1-SNAPSHOT.

https://github.com/cloudevents/sdk-java/commits/v4.0.1/
https://github.com/cloudevents/sdk-java/commits/v4.0.0/