libspectre/libspectre-0.2.12-1-x86_64.pkg.tar.zst build reproducible in our test framework:
c3cfd614c6715adc9b856ff1b1d686471123074d925ab81b8fab5893fb0d8f64 libspectre-0.2.12-1-x86_64.pkg.tar.zst
977e15a1007c5ec1133e4c7c94b2e8f8356cb218ffb186c288ea36ea0fdda9fc libspectre-0.2.12-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
977e15a1007c5ec1133e4c7c94b2e8f8356cb218ffb186c288ea36ea0fdda9fc libspectre-0.2.12-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt