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If just the public IP's or VIP's had changed this could be done without re-installing the binaries, using oifcfg and srvctl.
However the change in hostname is not supported as per Oracle Note "RAC: Frequently Asked Questions [ID 220970.1]".
It refers to the following to reconfigure your GI.....How to Modify or Deinstall Oracle Grid Infrastructure
This reconfiguration will likely be quicker than a re-install.
Thanks. What about a standalone host with oracle version 22.214.171.124 with ASM components.