The tag is present in Lintian version 2.114.55. 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 8053610. For merge requests, please use the latest version in the Lintian check debhelper.
The listed target in debian/rules is a likely misspelling or it is
missing an underscore ("_") between the
execute_after_dh etc. and the command name.
This can result in (for example) a
silently not being executed by
Implementation detail: The typo is detected by using "Levenshtein edit distance" so if the typo involve several characters Lintian may not detect it.