TL;DR
To get a manifest from k8s in any supported API version you can use an extended kubectl get notation like kubectl get deployments...
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Welcome, and thank you for sharing !
That is a nice trick, I did not know about it.
What use case made you discover this ? Why would you not need the latest version ?
I don't remember, it was kind of incidental catch)
But you can still have some situations where this trick can be useful. E.g. you have some manifest deployed in a test cluster and you want to copy it to stage. And k8s version in test is newer than stage.