Is there anyway to set tracing_appender struct RollingFileAppender's private member now?

[vCassius]

it's my source for log file name

    let file_appender = RollingFileAppender::builder().filename_prefix(&conf.log_file).rotation(Rotation::HOURLY).build(&conf.log_dir).expect("failed to build rolling file appender");

file name will be UTC,like: v-tcp-proxy.log.2024-08-01-09 i want to set timezone Asia/Shanghai,but i found now is a private member,and not any method can change it.it's initialization like this let now = OffsetDateTime::now_utc();

    fn from_builder(builder: &Builder, directory: impl AsRef<Path>) -> Result<Self, InitError> {
        let Builder {
            ref rotation,
            ref prefix,
            ref suffix,
            ref max_files,
        } = builder;
        let directory = directory.as_ref().to_path_buf();
        let now = OffsetDateTime::now_utc();
        let (state, writer) = Inner::new(
            now,
            rotation.clone(),
            directory,
            prefix.clone(),
            suffix.clone(),
            *max_files,
        )?;
        Ok(Self {
            state,
            writer,
            #[cfg(test)]
            now: Box::new(OffsetDateTime::now_utc),
        })
    }