As reported by Andrew Leonard:

"At first glance of the build log, I can see one issue which is the
--with-source-date= is blank, this means the JDK will use a timestamp
generated from the time of the start of your build, which is thus not
reproducible, you will need to change this to use the scheduled release
date, which is achieved by using:
    --with-source-date=version"

This is because the option was set to use SOURCE_DATE_EPOCH when added, but this environment variable is only set on newer versions of Fedora & RHEL. We should switch to what Temurin uses to simplify comparisons.