This project coordinates the tasks that need to be performed as part of creating a release for Hibernate.
Both snapshot and release artifacts are published to Sonatype OSSRH.
The "official" detials about OSSRH + Gradle can be found at https://central.sonatype.org/publish/publish-gradle/. However, its content is way out of date as of the time of this writing. https://dev.to/kengotoda/deploying-to-ossrh-with-gradle-in-2020-1lhi presents a much better guide. Regardless, This is all just for background; all of this information is "backed into" the build scripts.
After release, be sure to manage the staging repository created for it on OSSRH.
Release bundles (as ZIP and TGZ) are uploaded to SourceForge