getMediaTempFilename = function({ imageUrl, width, height, fit }) {
  const md5 = crypto
    .createHash("md5")
    .update(imageUrl)
    .digest("hex");
  const now = new Date().getTime();
  return `${md5}-${width}x${height}-${fit}-${now}.tmp`;
}
Get media tmp filename
@param {object} param0