how to upload big file via base64file in pipeline

Using Jenkins
1

hello everyone,
I’m new to jenkins, and I encountered a problem when using jenkins to upload files to the working directory, which has troubled me for several days. So I had to come here to ask everyone.

I want to upload some pictures or files to the working directory through the pipeline, and then upload them to git. The following is my pipeline

pipeline {
    agent

{         label 'master'     }
        base64File(name: 'pdfile', description: 'pdf')
  }
    stages {
                stage('rename file') {
                        steps {
                             withFileParameter(name:'pdfile', allowNoFile: false) {
                                 sh """ mv $pdfile ${workspace}/example.pdf """
                             }
                        }
                }
    }
}

I followed the code samples in the jenkins docs and it looks like it didn’t work out. Afterwards, I found out that base64 is only effective for small files, so how to upload files of MB or larger in the pipeline now?