/usr/share/doc/racket/test-engine/stamp.sxref is in racket-doc 6.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | ("a638611bd80bb2c81c1ab2b091b32fb7bfe0d29e03efefe8f028f89d056061e77ee496f4c4e54369" "c7a6e669961eabf8b60bb84cd7d316191aa1e09467bac8c41d5362e9129385445cf0460cbc5db6ea" "78c9c50af1e7be87d9e1bf32c56c1f56e3fa8c14")
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