texlive-bin/libsynctex-2021.58686-3-x86_64.pkg.tar.zst build reproducible in our test framework:
42a8e5413d672bfc556ad679fcc98eff677a9aad5e15b95892e1e90716272aff libsynctex-2021.58686-3-x86_64.pkg.tar.zst
20024937296d4b0b03ac969137ad31ef2fc1157fa8e48dd755f1a7805b7c1ecd libsynctex-2021.58686-3-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
20024937296d4b0b03ac969137ad31ef2fc1157fa8e48dd755f1a7805b7c1ecd libsynctex-2021.58686-3-x86_64.pkg.tar.zst-b2.BUILDINFO.txt