There is a symlink /usr/share/doc/pkg1 -> pkg2 in your package. This means that pkg1 and pkg2 must both come from the same source package. Lintian cannot check this right now however.
Please reprocess this binary together with its source package to avoid this tag.
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 debian/copyright.