How can I confirm the specific version of dockerfile.v0 used by each buildkit version by default?

[balabalabutton]

I just checked the --unpack parameter in the Dockerfile and found it wasn't working.
It turned out that the buildkit specified by buildkit.service is an old version. The buildkit command completed by the shell is a higher version program in another path,its a personal mistake.
hover,during troubleshooting, I discovered that the buildctl debug worker/info command doesn't tell me what version the default Dockerfile parser is using.
So, is it possible to provide a version binding table? Or add relevant information to the output of the command buildctl debug worker

I think it is very useful for locating the default Dockerfile parser used by older versions of buildkit, although it is not very useful for the latest version.