LUCENE-8807 I figured out today, that Lucene's build system uses HTTPS URLs everywhere. But the POMs deployed to Maven central still use http (I assumed that those are inherited from the ANT build).
This will fix it for later versions by changing the POM templates. Hopefully this will not happen in Gradle!
Mark Miller: Can you make sure that the new Gradle build uses HTTPS for all hard configured repositories (like Cloudera)?