The version number of this package contains "dfsg", but it's a native package. "dfsg" is conventionally used in the upstream version of packages that are repackaged for Debian Free Software Guidelines compliance reasons. The convention doesn't make sense in native packages.
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 ffc17eb. For merge requests, please use the latest version in the Lintian check fields/version.