替代go-gorm中的硬编码结构

I am working with a database that has a huge dataset of a single type with a lot of fields. Other applications modify this dataset, and fields might be added or removed. Is there a way to make gorm work with another datastructre than static structs?

What I am looking for would effectively be the inverse of autoMigrate, to make my code conform to the existing database. I am only looking to query the db, not change any of the data

type Jpeg struct {
    ID                       string
    Gpssatelites             string
    ApertureValue            string
    BodySerialNumber         string
    ColorSpace               string
    Compression              string
    CustomRendered           string
//about 50 jpeg values at the moment
}

func getJpeg(args) Jpeg{
    var jpeg Jpeg
    db.Take(&jpeg, args)
    return jpeg
}

I have tested a bit with maps, interfaces and other suggestions to similar problems, but I end up with the error "unsupported destination, should be slice or struct". Databases do change from time to time, is there really no way to have the internal models conform to whatever database you connect to. Is there perhaps better alternatives for what I am trying to achieve?