Why doesn't Gotour run when I move the file %GOROOT%\tour.exe to foo\tour.exe?

microsoft windows [version 10.0.22621.1265] (c) microsoft corporation. all rights reserved. c:\users\donhu>go env set go111module= set goarch=amd64 set gobin= set gocache=c:\users\donhu\appdata\local\go-build set goenv=c:\users\donhu\appdata\roaming\go\env set goexe=.exe set goexperiment= set goflags= set gohostarch=amd64 set gohostos=windows set goinsecure= set gomodcache=c:\users\donhu\go\pkg\mod set gonoproxy= set gonosumdb= set goos=windows set gopath=c:\users\donhu\go set goprivate= set goproxy=https://proxy.golang.org,direct set goroot=c:\program files\go set gosumdb=sum.golang.org set gotmpdir= set gotooldir=c:\program files\go\pkg\tool\windows_amd64 set govcs= set goversion=go1.20.1 set gccgo=gccgo set goamd64=v1 set ar=ar set cc=gcc set cxx=g++ set cgo_enabled=0 set gomod=nul set gowork= set cgo_cflags=-o2 -g set cgo_cppflags= set cgo_cxxflags=-o2 -g set cgo_fflags=-o2 -g set cgo_ldflags=-o2 -g set pkg_config=pkg-config set gogccflags=-m64 -fno-caret-diagnostics -qunused-arguments -wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=c:\users\donhu\appdata\local\temp\go-build1095406662=/tmp/go-build -gno-record-gcc-switches c:\users\donhu>