if testenv.Builder() != "" || os.Getenv("GIT_TRACE_CURL") == "1" {
		// To help diagnose https://go.dev/issue/52545,
		// enable tracing for Git HTTPS requests.
		env = append(env,
			"GIT_TRACE_CURL=1",
			"GIT_TRACE_CURL_NO_DATA=1",
			"GIT_REDACT_COOKIES=o,SSO,GSSO_Uberproxy")
	}
	if testing.Short() {
		// VCS commands are always somewhat slow: they either require access to external hosts,