$ go get github.com/pet2cattle/golang-demo go: downloading github.com/pet2cattle/golang-demo v0.0.0-20220925191817-0b4b7026fa7f go: github.com/pet2cattle/golang-demo@v0.0.0-20220925191817-0b4b7026fa7f: verifying module: github.com/pet2cattle/golang-demo@v0.0.0-20220925191817-0b4b7026fa7f: reading https://sum.golang.org/lookup/github.com/pet2cattle/golang-demo@v0.0.0-20220925191817-0b4b7026fa7f: 404 Not Found server response: not found: github.com/pet2cattle/golang-demo@v0.0.0-20220925191817-0b4b7026fa7f: invalid version: git ls-remote -q origin in /tmp/gopath/pkg/mod/cache/vcs/75d68059a7355b978972dea177e930262ce90abe410680b8db8a45a587e02c26: 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.