Hibernate return last fetch and modified object instead fetch new one

Question

my problem is this. ill try to make it simple. I am using spring data jpa +spring boot (hibernate config) with mysql.

I have a class (entity) like this.

public class A {

@EmbeddedId
Aid id;


 @OneToMany(fetch = FetchType.EAGER, mappedBy = "a")
    @OrderBy("order ASC")
    @MapKey(name = "b.bid")
    Map<String, B> b;

//id class
 @Embeddable
    public static class Aid implements Serializable {
        private String agent;
        private String id;
    }

//some other fields/methods

}

here other class

public class B {
    private Integer x;
    private String code;
    @Transient
    private String value;

    //B embedable id class goes here

}

Note you can assume all missing annotations / method / id are there and this is perfectly working code. I did not added those here to avoid being complicate the question.

this is my question.

when I fetch this A object from database I adding it to map [storageMap] and during the program from A object which is in storageMap read and its B objects value field (B object in Map of A object) get update.

but my problem is when i fetch again A from database it give me previously fetched and dirty (modified) object. but I need fresh copy from database to reset all modifications. hibernate does not know its dirty because its @Transient ? how I can solve this. ( I know if I deep copy what return from database before adding to my storageMap would solve the problem. any other better way to do?)