/usr/share/doc/python-fisx-dbg/changelog.Debian.gz is in python-fisx-dbg 1.1.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/python-fisx-dbg/../python-fisx/changelog.Debian.gz
/usr/share/doc/python-fisx-dbg/../python-fisx/changelog.Debian.gz