qpdf/qpdf-docs-11.9.0-1-x86_64.pkg.tar.zst build reproducible in our test framework:
f7b060f74f2eea28495473c8e695f8125ce14bd99033cc0f1c1916acd4338b24 qpdf-docs-11.9.0-1-x86_64.pkg.tar.zst
4c8cf7d4c6c7724e8e9c1a23596cb09397baf6807c87b3a455efb7f7b4404e85 qpdf-docs-11.9.0-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
4c8cf7d4c6c7724e8e9c1a23596cb09397baf6807c87b3a455efb7f7b4404e85 qpdf-docs-11.9.0-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt