Windows checkout abysmally slow compared to Linux #20

A simple

    steps:
    - uses: actions/checkout@v3

Is taking 44 seconds on Windows Server 2022 (windows-latest), while it takes 1 second on Linux (ubuntu-latest). That's 44 times slower.

See run here.

Something can't be right here. It's taking an extraordinarily long time between the start and the first "Syncing repository" message and a whopping 5 seconds to do a git init which should be almost instant.

Since actions/checkout#1246 got merged and I am specifying checkout@v3 to get the latest v3 version, it should not be that issue. actions/checkout#1186 does not apply because it's about Windows Server 2019.

Windows:

Linux: