如何阻止GORM按ID对预载进行排序？

In my database I have a users table, joined via a many-to-many table to schools. A school has many jobs. I'm trying to return all the schools and their jobs for a specific user. This is my code so far:

var user User
err := db.Where("id = ?", userID).Preload("Schools")
.Preload("Schools.Jobs", func(db *gorm.DB) *gorm.DB {
    return db.Order("job.job_reference DESC")
}).First(&user).Error
return &user.Schools, err

Gorm is then executing the following queries:

SELECT * FROM `user`  WHERE (id = 'foo') ORDER BY `user`.`id` ASC LIMIT 1

SELECT * FROM `school` 
INNER JOIN `user_school` ON `user_school`.`school_id` = `school`.`id` 
WHERE (`user_school`.`user_id` IN ('foo'))  

SELECT * FROM `job` WHERE (`school_id` IN ('1','2')) 
ORDER BY job.job_reference DESC,`job`.`id` ASC

The first two generated SQL queries are exectly what I expected however the last query tries to sort by the criteria I provided AND a default sort by ID. If I remove my specific sort instructions it still tries to sort by ID. How can I stop it from doing that?