Why use randToken when generating style.min.css file?

[xandery-geek]

Hello, I am confused about why use a random filename for the generated style.min.css/script.min.js file in head.ejs/script.ejs?

I manage the theme code with git. Once rebuilding the theme code, the filename of style.min.css and script.min.js would be changed, which has caused some inconvenience to me.

The related code is in tranquilpeak\tasks\config\cssmin.js

var randToken = require('rand-token');

module.exports = function(grunt) {
  grunt.config.set('cssmin', {
    // Minify `style.css` file into `style.min.css`
    prod: {
      files: [{
        expand: true,
        cwd: 'source/assets/css',
        src: ['style.css'],
        dest: 'source/assets/css',
        ext: '-' + randToken.generate(60).toLocaleLowerCase() + '.min.css'
      }]
    }
  });
  grunt.loadNpmTasks('grunt-contrib-cssmin');
};