The string "Please also look if..." appears in the copyright file, which indicates that you either didn't check the whole source to find additional copyright/license, or that you didn't remove that paragraph after having done so.
For more information please consult:
- Copyright information (Section 12.5) in the Debian Policy Manual
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 3410a22. For merge requests, please use the latest version in the Lintian check debian/copyright.