This github repository neither hosts nor provide PublicDecompWT sources, it's meant to host (unofficial) convenience files for Fedora and CentOs rpm packaging and feeding che copr repo: https://copr.fedorainfracloud.org/coprs/simc/stable/
For PublicDecompWT source see: https://gitlab.eumetsat.int/open-source/PublicDecompWT
For CentOS and Fedora, rpm packages are hosted in a copr repo: https://copr.fedorainfracloud.org/coprs/simc/stable/