Fetching using Windows 10 will not complete, and sit without any errors. Running direct from terminal shows:
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git -c diff.mnemonicprefix=false -c core.quotepath=false fetch upstream
The server's host key is not cached in the registry. You
have no guarantee that the server is the computer you
think it is.
The server's rsa2 key fingerprint is:
ssh-rsa 2048 97:8c:1b:f2:6f:14:6b:5c:3b:ec:aa:46:46:74:7c:40
Do you want to accept this server's key and retry the operation ?
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Accepting, and then going back in to ST to re try will now work. Either the alert dialogue box is not triggering, or one needs to be added. Using putty to load SSH keys.