Function getWants

remote.go:1057–1086

(localStorer storage.Storer, refs memory.ReferenceStorage, depth int)

}

func getWants(localStorer storage.Storer, refs memory.ReferenceStorage, depth int) ([]plumbing.Hash, error) {
	// If depth is anything other than 1 and the repo has shallow commits then just because we have the commit
	// at the reference doesn't mean that we don't still need to fetch the parents
	shallow := false
	if depth != 1 {
		if s, _ := localStorer.Shallow(); len(s) > 0 {
			shallow = true
		}
	}

	wants := map[plumbing.Hash]bool{}
	for _, ref := range refs {
		hash := ref.Hash()
		exists, err := objectExists(localStorer, ref.Hash())
		if err != nil {
			return nil, err
		}

		if !exists || shallow {
			wants[hash] = true
		}
	}

	var result []plumbing.Hash
	for h := range wants {
		result = append(result, h)
	}

	return result, nil
}

func objectExists(s storer.EncodedObjectStorer, h plumbing.Hash) (bool, error) {
	_, err := s.EncodedObject(plumbing.AnyObject, h)