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Re:Improving Git protocol security on GitHub by LukeShu on Wednesday September 01, 2021 @03:02PM (#28384212)
Kinda, but you could already have "saved credentials" for git:// URLs by having something like this in your ~/.config/git/config:

    [url "[email protected]:foo/bar"]
        insteadOf = git://github.com/foo/bar
Re:Improving Git protocol security on GitHub by zerocrates on Wednesday September 01, 2021 @03:31PM (#28384555)
Huh, I was unaware of that. But then again so are most people, I'm sure.

It's akin using HostName in an ssh config file, though with what I'd consider to be a kind of odd reversed directionality to how you define it (and obviously letting you protocol-jump like this).