The problem is still present. With XCode 12.1 ("version 2373"), xcode-select --install still results in the reported failure, perhaps because there is not a matching version of the tools package in the repository. The version CommandLineToolsforXcode12GM_seed works when manually downloaded, but it appears it is not what XCode is requesting. It doesn't seem like it should be a significant effort to add appropriately named package to the repository.
William_J_Earl_sfdc
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