/usr/share/doc/libpocozip9v5-dbg/changelog.Debian.gz is in libpocozip9v5-dbg 1.3.6p1-5.1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libpocozip9v5-dbg/../libpocozip9v5/changelog.Debian.gz