/usr/share/doc/gis-osm/changelog.gz is in gis-osm 0.0.4ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gis-osm/../gis-tasks/changelog.gz
/usr/share/doc/gis-osm/../gis-tasks/changelog.gz