In the dropdown menu of Repository, you can see there is a button named Open in Git Bash (Ctrl + `),
when I click it, I got a war
To make Github Desktop locate Git successfully, the URI of Git must be given in environment variable %PATH%.
I suggest to assign %GitPath% value of URI of Git, say C:\Program Files\Git\bin; then append %GitPath% to the end of %PATH%, and don't forget about path seperator (;).
At last, restart Github Desktop after assigning the environment variables, if it is still running.
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