go get: error loading module requirements

[lumixraku]

go get -u github.com/wesovilabs/koazee
go: finding github.com/golangci/unparam latest
go: finding github.com/golangci/revgrep latest
go: finding github.com/divan/depscheck latest
go: finding github.com/go-critic/checkers latest
go: finding github.com/golangci/gofmt latest
go: finding github.com/golangci/check latest
go: finding github.com/golangci/lint latest
go: finding golang.org/x/tools latest
go: finding github.com/golangci/ineffassign latest
go: finding github.com/shurcooL/go latest
go: finding github.com/golangci/lint-1 latest
go: finding github.com/shirou/w32 latest
go: finding github.com/shurcooL/go-goon latest
go: finding golang.org/x/crypto latest
go: finding github.com/golangci/maligned latest
go: finding github.com/golangci/errcheck latest
go: finding github.com/golangci/goconst latest
go: finding github.com/golangci/prealloc latest
go: finding gopkg.in/check.v1 latest
go: finding github.com/OpenPeeDeeP/depguard latest
go: finding github.com/golangci/gosec latest
go: finding github.com/golangci/tools latest
go: finding golang.org/x/sys latest
go: finding github.com/nbutton23/zxcvbn-go latest
go: finding github.com/golangci/go-misc latest
go: sourcegraph.com/sourcegraph/go-diff@v0.5.1: parsing go.mod: unexpected module path "github.com/sourcegraph/go-diff"
go: finding golang.org/x/net latest
go: finding github.com/mitchellh/go-ps latest
go: finding github.com/golangci/go-tools latest
go: finding mvdan.cc/unparam latest
go get: error loading module requirements

"sourcegraph.com/sourcegraph/go-diff" can not be found