go mod error on fresh git clone

[rootkea]

What happened?

On a fresh git clone I get the mod error on trying to build one of the examples (websocket-initfunc)

Steps to reproduce:

$ git clone https://github.com/99designs/gqlgen
$ cd gqlgen/_examples/websocket-initfunc/server/
$ go mod tidy
go: finding module for package github.com/gqlgen/_examples/websocket-initfunc/server/graph/generated
github.com/gqlgen/_examples/websocket-initfunc/server imports
	github.com/gqlgen/_examples/websocket-initfunc/server/graph/generated: cannot find module providing package github.com/gqlgen/_examples/websocket-initfunc/server/graph/generated: module github.com/gqlgen/_examples/websocket-initfunc/server/graph/generated: git ls-remote -q origin in /home/rootkea/go/pkg/mod/cache/vcs/13c3f913e737c4370eda03277c919ac34938d093606e9e8abb89c76329806c6c: exit status 128:
	fatal: could not read Username for 'https://github.com': terminal prompts disabled
Confirm the import path was entered correctly.
If this is a private repository, see https://golang.org/doc/faq#git_https for additional information.
$

versions

$ go version
go version go1.18.1 linux/amd64
$