What exactly does the sentence go build-installsuffix cgo do?

see the official website to explain that the function is
to add a suffix to the directory where the package is installed to keep the output separate from the default version
I am testing that the function is
go build-installsuffix cgo
and does not add any suffixes,
such as
in src/test/main.go

package main

import "fmt"

func main() {
    fmt.Println("hello world")
}

what is the purpose of outputting files or test.exe
requests when go build-installsuffix cgo?

Jan.26,2022
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