Your package contains a file that claims to have been generated more than 20 years ago. This is most probably an error. Your package will be rejected by the Debian archive scripts if it contains a file with such a timestamp.
The tag is present in Lintian version
That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit ea05801. For merge requests, please use the latest version in the Lintian check files/date.