/usr/share/doc/racket/help/stamp.sxref is in racket-doc 6.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | ("c45c5e41fc5c9e2f07a812b7d5d3250dc1ac8540b041b86f7b095ff90629e3b30ea24350e4163b02" "b2f917692cf1cc1cf49127d1b08fedd6788c9acdb13acc6f660c418a687f60b79b824471466f8642" "78c9c50af1e7be87d9e1bf32c56c1f56e3fa8c14")
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