xboard/xboard-4.9.1-3-x86_64.pkg.tar.zst build reproducible in our test framework:
38d2b1a2d979e7f598a5780900fbcb50c2cce830e4bc0f90a12345f999bf3967 xboard-4.9.1-3-x86_64.pkg.tar.zst
9489c1870b39fe8ff8566eb963f88346a739ea2bf41a2ab4702e7865f21514ec xboard-4.9.1-3-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
9489c1870b39fe8ff8566eb963f88346a739ea2bf41a2ab4702e7865f21514ec xboard-4.9.1-3-x86_64.pkg.tar.zst-b2.BUILDINFO.txt