improve log and clone repo command

command.go

@@ -122,8 +122,18 @@ func (c *Command) RunInDir(dir string) (string, error) {
 	return string(stdout), nil
 }
 
+// RunTimeout executes the command in defualt working directory with given timeout,
+// and returns stdout in string and error (combined with stderr).
+func (c *Command) RunTimeout(timeout time.Duration) (string, error) {
+	stdout, err := c.RunInDirTimeout(timeout, "")
+	if err != nil {
+		return "", err
+	}
+	return string(stdout), nil
+}
+
 // Run executes the command in defualt working directory
 // and returns stdout in string and error (combined with stderr).
 func (c *Command) Run() (string, error) {
-	return c.RunInDir("")
+	return c.RunTimeout(-1)
 }