/usr/share/lua/5.1/lgi/override/ is in lua-lgi 0.9.0.20151101.git.885af4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/lua/5.1/lgi/override/Clutter.lua
/usr/share/lua/5.1/lgi/override/GLib-Bytes.lua
/usr/share/lua/5.1/lgi/override/GLib-Error.lua
/usr/share/lua/5.1/lgi/override/GLib-Markup.lua
/usr/share/lua/5.1/lgi/override/GLib-Source.lua
/usr/share/lua/5.1/lgi/override/GLib-Timer.lua
/usr/share/lua/5.1/lgi/override/GLib-Variant.lua
/usr/share/lua/5.1/lgi/override/GLib.lua
/usr/share/lua/5.1/lgi/override/GObject-Closure.lua
/usr/share/lua/5.1/lgi/override/GObject-Object.lua
/usr/share/lua/5.1/lgi/override/GObject-Type.lua
/usr/share/lua/5.1/lgi/override/GObject-Value.lua
/usr/share/lua/5.1/lgi/override/Gdk.lua
/usr/share/lua/5.1/lgi/override/Gio-DBus.lua
/usr/share/lua/5.1/lgi/override/Gio.lua
/usr/share/lua/5.1/lgi/override/Gst.lua
/usr/share/lua/5.1/lgi/override/Gtk.lua
/usr/share/lua/5.1/lgi/override/Pango.lua
/usr/share/lua/5.1/lgi/override/PangoCairo.lua
/usr/share/lua/5.1/lgi/override/cairo.lua