/usr/share/cli-common/packages.d/libwnck2.20-cil.installcligac is in libwnck2.20-cil 2.26.0-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1
/usr/lib/cli/wnck-sharp-2.20/wnck-sharp.dll