dotnet-install.sh script fails to download: "curl: (51) Unable to communicate securely with peer: requested domain name does not match the server's certificate." #1839

CI has a hickup:

2020-10-27T09:41:55.5816737Z + /src/eng/common/dotnet-install.sh -runtime dotnet -version 3.1.1
2020-10-27T09:41:55.6017354Z Downloading 'https://dot.net/v1/dotnet-install.sh'
2020-10-27T09:41:56.1715723Z curl: (51) Unable to communicate securely with peer: requested domain name does not match the server's certificate.
2020-10-27T09:41:56.1763973Z bash: /src/.dotnet/dotnet-install.sh: No such file or directory
2020-10-27T09:41:56.1873338Z Failed to install dotnet SDK (exit code '127').

Originally posted by @tmds in #1828 (comment)