What is the URL of the page with the issue?

N/A

What is your user agent?

N/A

Screenshot

What did you do?

Git Cloned pkgsite and tried to use go get to get its dependencies

git clone git@github.com:golang/pkgsite.git ;
cd pkgsite ;
pwd ;
GOPROXY=proxy.golang.org go get golang.org/x/pkgsite ;
GOPROXY=goproxy.unx.sas.com go get golang.org/x/pkgsite

I ran these commands:

git clone git@github.com:golang/pkgsite.git ;
cd pkgsite ;
pwd ;
GOPROXY=proxy.golang.org go get golang.org/x/pkgsite ;
GOPROXY=goproxy.unx.sas.com go get golang.org/x/pkgsite

What did you expect to see?

I expected pkgsite dependencies to be download to the Go cache.
I tried the default GOPROXY and our company's internal GOPROXY. Both failed.
I have no issues downloading dependencies for other projects.
I can successfully run this 'go get' command from subdirs other than pkgsite as long as they have a go.mod

What did you see instead?

Cloning into 'pkgsite'...
remote: Enumerating objects: 43998, done.
remote: Counting objects: 100% (1707/1707), done.
remote: Compressing objects: 100% (195/195), done.
remote: Total 43998 (delta 1601), reused 1528 (delta 1512), pack-reused 42291
Receiving objects: 100% (43998/43998), 335.00 MiB | 32.82 MiB/s, done.
Resolving deltas: 100% (27755/27755), done.
/home/jafowl/pkgsite
go: golang.org/x/pkgsite: module golang.org/x: reading https://proxy.golang.org/golang.org/x/@v/list: 404 Not Found
server response: not found: golang.org/x is a known non-module
go: golang.org/x/pkgsite: module golang.org/x: reading https://goproxy.unx.sas.com/golang.org/x/@v/list: 404 Not Found

I know that it is not entirely necessary to do this normally, but the debugger that I use, GoLand insists on doing
a 'go get' on the main module whenever it debugs a project. This fails, so I cannot run the debugger.