/usr/lib/ghc-doc/hoogle/github.txt is in libghc-github-doc 0.7.2-1build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-github-doc/html/github.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-github-doc/html/github.txt