How to use select related in Django with an existing object?

Question

Django

I have an existing user object which has many related fields via select_relatedand prefetch_related:

user = models.User.objects.first().select_related(...).prefetch_related(...)

I need to get all the articles of this user through the model Article(not through user.article_set). Model Articlehas ForeignKeyper model User:

articles = models.Article.objects.filter(user=user)

I want all objects in querysety to Article have an existing object user, i.e. do something like this:

articles = models.Article.objects.filter(user=user).select_related(user)

or

articles = models.Article.objects.filter(user=user).annotate(user=user)

But these examples do not work, is this implementation possible in any form? Going through the loop articlesand assigning everything to them user'ais not very concise.