/usr/share/doc/octave-lhapdf/changelog.Debian.gz is in octave-lhapdf 5.9.1-3build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/octave-lhapdf/../liblhapdf0/changelog.Debian.gz
/usr/share/doc/octave-lhapdf/../liblhapdf0/changelog.Debian.gz