/usr/lib/python3/dist-packages/git/test/fixtures/ls_tree_b is in python3-git 2.1.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | 100644 blob aa94e396335d2957ca92606f909e53e7beaf3fbb grit.rb
040000 tree 34868e6e7384cb5ee51c543a8187fdff2675b5a7 grit
|