harbor fails to recognize non-existent image repository and returns "some" digest

Hi team

I'm exploring this tool to improve our existing CD pipelines and found an issue while trying to setup a POC.

Problem is that even kbld finish successfully and the output manifest contains the image referenced by a digest, metadata is added, etc.. but **the digest used doesn't exist**.

Even worst, trying with an incorrect tag gives same result, successful completion but incorrect digest.

Any idea?

About my environment:

Harbor as registry and kbld v 0.21.0.