cmd/go: "package?go-get=1 404 not found" errors occurs when go get private project in internal private gitlab repository

[learneryork]

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

$ go version
go v1.16

Does this issue reproduce with the latest release?

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

go env Output

$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN="/usr/local/go/bin"
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE="a.b.com"
GOMODCACHE="/root/go/pkg/mod"
GONOPROXY="https://a.b.com"
GONOSUMDB=""
GOOS="linux"
GOPATH="/root/go"
GOPRIVATE="https://a.b.com"
GOPROXY="https://goproxy.io,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.google.cn"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.16.12"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/test/workspace/demo/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3882968519=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Modify the configuration to be able to download private projects from private gitlab repositories

Approach 1

$ go env -w GOPRIVATE=a.b.com
$ go env -w GOINSECURE=a.b.com
$ go get a.b.com/testgroup/compkg

Approach 2

$ git config --global url."git@a.b.com:testgroup/compkg.git".insteadOf "https://a.b.com/testgroup/compkg"
$ go get a.b.com/testgroup/compkg

Approach 3

$ vim ~/.netrc
machine a.b.com
              username abcd
              password  private-token

PS: testgroup is groupname not username in gitlab

What did you expect to see?

I can download private project successfullly and use it import

What did you see instead?

go get failed, the error is as follows

$ go get -v -x a.b.com/testgroup/testpkg
# get https://a.b.com/?go-get=1
# get https://a.b.com/testgroup/testpkg?go-get=1
# get https://a.b.com/testgroup?go-get=1
# get https://a.b.com/testgroup?go-get=1: 404 Not Found (0.044s)
# get https://a.b.com/?go-get=1: 403 Forbidden (0.044s)
# get https://a.b.com/testgroup/testpkg?go-get=1: 404 Not Found (0.044s)
# get https://a.b.com/testgroup/testpkg?go-get=1
# get https://a.b.com/testgroup?go-get=1
# get https://a.b.com/?go-get=1
# get https://a.b.com/testgroup/testpkg?go-get=1: 404 Not Found (0.001s)
# get https://a.b.com/testgroup?go-get=1: 404 Not Found (0.001s)
# get https://a.b.com/?go-get=1: 403 Forbidden (0.002s)
go get: unrecognized import path "a.b.com/testgroup/testpkg": reading https://a.b.com/testgroup/testpkg?go-get=1: 404 Not Found

I used the following curl command to return the following error:

$ curl --insecure https://a.b.com/testgroup/compkg?go-get=1
...
404 Not Found
...

[seankhliao]

we don't support 1.16 anymore.

Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and proposals only.

For questions please refer to https://github.com/golang/go/wiki/Questions

[shaneHowearth]

For the record I've been having a very similar problem with go get
(I am considering filing an issue, but I am appending this here in case anyone finds this helpful)

go version
go version go1.21.4 linux/arm64

The issue was "fixed" by changing the go.mod of the project I have hosted privately to be

module shanehowearth.com/my/project.git
...

and

go get shanehowearth.com/my/project.git

Note: The Proxy info still needs to be set

No amount of .gitconfig fu would get go get to fetch the repository that is hosted on my on servers

See: https://stackoverflow.com/questions/60645866/how-can-i-make-go-get-work-with-a-repo-on-a-local-server for more information

I consider it an issue because there seems to be no /logical/ reason that go get should require the module to be named *.git in order for ssh to be used to fetch it