/usr/share/doc/libncurses5-dbg/changelog.Debian.gz is in libncurses5-dbg 5.9-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libncurses5-dbg/../libtinfo5/changelog.Debian.gz
/usr/share/doc/libncurses5-dbg/../libtinfo5/changelog.Debian.gz