The output of the downgrade command;-
[root@ipa01 ~]# if rpm -q --queryformat '%{version}' java-1.8.0-openjdk |grep
"1.8.0.272"; then dnf downgrade -y java-1.8.0-openjdk
java-1.8.0-openjdk-headless; fi
1.8.0.272.b10
Failed to set locale, defaulting to C.UTF-8
Last metadata expiration check: 1:52:54 ago on Tue Nov 3 09:27:20 2020.
Package java-1.8.0-openjdk of lowest version already installed, cannot downgrade it.
Package java-1.8.0-openjdk-headless of lowest version already installed, cannot downgrade
it.
Dependencies resolved.
Nothing to do.
Complete!
In the repositories of CentOS8 I see the repodata timestamped at Oct 30th. Downgradable
versions are not included.