/usr/lib/ruby/vendor_ruby/ is in ticgit 1.0.2.17-2build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/ticgit-ng/
/usr/lib/ruby/vendor_ruby/ticgit-ng.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/attachment.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/base.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/cli.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/
/usr/lib/ruby/vendor_ruby/ticgit-ng/command.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/assign.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/attach.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/checkout.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/comment.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/help.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/init.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/list.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/milestone.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/new.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/points.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/recent.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/show.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/state.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/sync.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/command/tag.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/comment.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/ticket.rb
/usr/lib/ruby/vendor_ruby/ticgit-ng/version.rb