Wdebian-control-file-is-a-symlink
The tag is present in Lintian version 2.104.234. That is the most recent version we know about.
The debian/control file is a symlink rather than a regular
file. Using symlinks for required source package files is unnecessary and
makes package checking and manipulation more difficult. If the control
file should be available in the source package under multiple names, make
debian/control the real file and the other names symlinks to it.
Visibility: warning
Check: debian/control