libpng/libpng-1.6.43-1-x86_64.pkg.tar.zst build reproducible in our test framework:
90e2474a900c4f5d607b138adcc524dd3cc07a16594e733ea97accf5bb1e71d6 libpng-1.6.43-1-x86_64.pkg.tar.zst
a2a4b69bc4ca53aa12c935def6ec032705e2898328058ae867fd1b19a6b155a8 libpng-1.6.43-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
a2a4b69bc4ca53aa12c935def6ec032705e2898328058ae867fd1b19a6b155a8 libpng-1.6.43-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt