cmd/go: get subcommand missing help for -v -x flags

[phemmer]

What version of Go are you using (go version)?

$ go version
go version go1.20.1 linux/amd64

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN="/home/phemmer/.go/bin"
GOCACHE="/home/phemmer/.cache/go-build"
GOENV="/home/phemmer/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/phemmer/.go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/phemmer/.go:/tmp/go:/home/phemmer/.go:/tmp/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.20.1"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build265240631=/tmp/go-build -gno-record-gcc-switches"

What did you do?

go help get

What did you expect to see?

Extended documentation which matches the usage

What did you see instead?

Documentation missing on flags listed in the usage, and flags in documentation that are missing in the usage.

the "usage" line shows:

usage: go get [-t] [-u] [-v] [build flags] [packages]

However there is no documentation on what -v is.

Also there is documentation on the -x flag, but this flag is not listed in the usage.

[bcmills]

-x and -v are included in the [build flags] section.

Most other commands that accept build flags say “For more about build flags, see 'go help build'.” However, it appears that that sentence is missing for module-mode go get.

[gopherbot]

Change https://go.dev/cl/474375 mentions this issue: cmd/go: unify the format of the go help xxx command