mini=; cat fmt1.go
package main

func main() {
/*
prints test 5 times
*/
    for i := 0; i < 5; i++ {
        println("test")
    }
}

mini=; cat fmt1.go | gofmt
package main

func main() {
    /*
    prints test 5 times
    */
    for i := 0; i < 5; i++ {
        println("test")
    }
}
mini=; cat fmt1.go | gofmt | gofmt
package main

func main() {
    /*
        prints test 5 times
    */
    for i := 0; i < 5; i++ {
        println("test")
    }
}
mini=; 

It does stabilize at that point.

Pointed out on golang-nuts by Mustafa Zengin <mzengin88@gmail.com>