libxext/libxext-1.3.6-1-x86_64.pkg.tar.zst build reproducible in our test framework:
0e223e400a51f5fe09d291742fffbeaf412924223153917b051a666c99ec9c37 libxext-1.3.6-1-x86_64.pkg.tar.zst
33f25631f73f7bfa0e0ed00feb245e0a05eb779010a1d2bbe75d9327381a9a17 libxext-1.3.6-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
33f25631f73f7bfa0e0ed00feb245e0a05eb779010a1d2bbe75d9327381a9a17 libxext-1.3.6-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt