qt5-tools/qt5-tools-5.15.12+kde+r4-2-x86_64.pkg.tar.zst build reproducible in our test framework:
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e27ea00a0aa9f202962eed4103fd37797cc3da81e646b9298f4d96e356818861 qt5-tools-5.15.12+kde+r4-2-x86_64.pkg.tar.zst-b2.BUILDINFO.txt