/usr/ is in libgnome-todo-dev 3.28.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/include/
/usr/include/gnome-todo/
/usr/include/gnome-todo/gnome-todo.h
/usr/include/gnome-todo/gtd-activatable.h
/usr/include/gnome-todo/gtd-enums.h
/usr/include/gnome-todo/gtd-manager.h
/usr/include/gnome-todo/gtd-notification.h
/usr/include/gnome-todo/gtd-object.h
/usr/include/gnome-todo/gtd-panel.h
/usr/include/gnome-todo/gtd-provider.h
/usr/include/gnome-todo/gtd-task-list-view.h
/usr/include/gnome-todo/gtd-task-list.h
/usr/include/gnome-todo/gtd-task.h
/usr/include/gnome-todo/gtd-timer.h
/usr/include/gnome-todo/gtd-types.h
/usr/include/gnome-todo/gtd-utils.h
/usr/include/gnome-todo/gtd-window.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gnome-todo.pc
/usr/share/doc/libgnome-todo-dev/
/usr/share/doc/libgnome-todo-dev/copyright
/usr/share/gir-1.0/
/usr/share/gir-1.0/Gtd-1.0.gir
/usr/share/doc/libgnome-todo-dev/changelog.Debian.gz