optipng/optipng-0.7.8-1-x86_64.pkg.tar.zst build reproducible in our test framework:
9c0d8f0e4e7203b6d7bd70c5710dc1e399a3f7a9e82777cf867b144767259380 optipng-0.7.8-1-x86_64.pkg.tar.zst
c0fd5f8656e77095f173c6631fce8257cb6fea08e01b4b25a35e64eecc5c0fae optipng-0.7.8-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
c0fd5f8656e77095f173c6631fce8257cb6fea08e01b4b25a35e64eecc5c0fae optipng-0.7.8-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt