>From a Bits from the DPL link, I ended up on <URL: https://tracker.debian.org/pkg/libxdmcp > noticing its Vcs links point to <URL: git://git.debian.org/git/pkg-xorg/lib/libxdmcp >, which by now is obsolete. I tried tracking down the old git repository via <URL: https://alioth-archive.debian.org/git/pkg-xorg/ >, but there is no lib/ subdirectory and no sign of the original libxdmcp git repository. Is the old git repository lost?
In case it can help, and for your consideration, I downloaded old versions from snapshot.debian.org and prepared a git repository <URL: https://salsa.debian.org/pere/libxdmcp > with the already uploaded versions, in case the git history need to be reconstructed. The git repository is prepared for use with git-buildpackage. I further prepared a git branch debian/latest-lintian-fixes with some changes I believe are improvements to the packaging, for you to merge, cherry-pick or ignore, depending on your needs. -- Happy hacking Petter Reinholdtsen