Where is the source code for debbugs running on bugs.debian.org ?

Ian Kelling <[email protected]> Sun, 29 Oct 2023 18:02:41 -0400
Newsgroups gmane.linux.debian.devel.debbugs
Message-ID <[email protected]>
https://wiki.debian.org/Teams/Debbugs says Sourcecode:
https://bugs.debian.org/debbugs-source/ . But in that directory listing,
it is unclear if it is running the version in 	debian-20230326.tar.gz
or debian/ or the default branch of debbugs.git/