/usr/share/doc/racket/tool/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 | ("ef73a6ec63f5c378c1eee6a62858a3d6a51d4f7ac6fa22e6602c2b3c78ca813b48b167076cb0af27" "c7a6e669961eabf8b60bb84cd7d316191aa1e09467bac8c41d5362e9129385445cf0460cbc5db6ea" "78c9c50af1e7be87d9e1bf32c56c1f56e3fa8c14")
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