The tag is present in Lintian version 2.113.26. 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 43a81d7. For merge requests, please use the latest version in the Lintian check group-checks.
The binaries appears to have overlapping files without proper conflicts relation.
Note the check is completely based on the file index for the packages. Possible known false-positives include dpkg-diverts in maintainer scripts.