func golang.org/x/mod/module.EscapeVersion

2 uses

	golang.org/x/mod/module (current package)
		module.go#L649: func EscapeVersion(v string) (escaped string, err error) {

	golang.org/x/pkgsite/internal/proxy
		client.go#L193: 	escapedVersion, err := module.EscapeVersion(requestedVersion)