// 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")
	}

	return env
}

// homeEnvName returns the environment variable used by os.UserHomeDir
// to locate the user's home directory.
func homeEnvName() string {

		// 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,

		// To help diagnose https://go.dev/issue/52545,
		// enable tracing for Git HTTPS requests.
		os.Setenv("GIT_TRACE_CURL", "1")
		os.Setenv("GIT_TRACE_CURL_NO_DATA", "1")
		os.Setenv("GIT_REDACT_COOKIES", "o,SSO,GSSO_Uberproxy")
	}

	r := m.Run()
	if !*testWork {
		removeAll(testTmpDir) // os.Exit won't run defer
	}

	if !*testWork {
		// There shouldn't be anything left in topTmpdir.