Jeff King <> writes:

> When we are asked to peel a ref to a sha1, we internally call
> deref_tag, which will recursively parse each tagged object
> until we reach a non-tag. This has the benefit that we will
> verify our ability to load and parse the pointed-to object.
> However, there is a performance downside: we may not need to
> load that object at all (e.g., if we are listing peeled
> simply listing peeled refs),...

Both correct.

I checked the existing callsites and nobody seems to assume that it
can use the pointed-to object without checking because peel_ref has
already checked, so it makes sense.
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