Best practices for enum with django models and migrations

I have a django model with a field that uses a enum for it's choices tuple like this:

VERSION_CHOICES = tuple(
    (v.value, v.value) for v in ForwardsUpdateEventSensitivityVersion
)
version = models.CharField(
    max_length=max(len(s[0]) for s in VERSION_CHOICES),
    choices=VERSION_CHOICES,
)

What is the best practice for writing the accompanying migration?

Using the enum directly like this:

models.CharField(
    choices=[
        tuple(
            (v.value, v.value)
            for v in ForwardsUpdateEventSensitivityVersion
        )
    ],
)

Or hardcoding the values like this:

models.CharField(
    choices=[("V1", "V1"), ("V2", "V2")],
)

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