Method updateLocalReferenceStorage

remote.go:1229–1304

(
	specs []config.RefSpec,
	fetchedRefs, remoteRefs memory.ReferenceStorage,
	specToRefs [][]*plumbing.Reference,
	tagMode TagMode,
	force bool,
)

}

func (r *Remote) updateLocalReferenceStorage(
	specs []config.RefSpec,
	fetchedRefs, remoteRefs memory.ReferenceStorage,
	specToRefs [][]*plumbing.Reference,
	tagMode TagMode,
	force bool,
) (updated bool, err error) {
	isWildcard := true
	forceNeeded := false

	for i, spec := range specs {
		if !spec.IsWildcard() {
			isWildcard = false
		}

		for _, ref := range specToRefs[i] {
			if ref.Type() != plumbing.HashReference {
				continue
			}

			localName := spec.Dst(ref.Name())
			// If localName doesn't start with "refs/" then treat as a branch.
			if !strings.HasPrefix(localName.String(), "refs/") {
				localName = plumbing.NewBranchReferenceName(localName.String())
			}
			old, _ := storer.ResolveReference(r.s, localName)
			new := plumbing.NewHashReference(localName, ref.Hash())

			// If the ref exists locally as a non-tag and force is not
			// specified, only update if the new ref is an ancestor of the old
			if old != nil && !old.Name().IsTag() && !force && !spec.IsForceUpdate() {
				ff, err := isFastForward(r.s, old.Hash(), new.Hash(), nil)
				if err != nil {
					return updated, err
				}

				if !ff {
					forceNeeded = true
					continue
				}
			}

			refUpdated, err := checkAndUpdateReferenceStorerIfNeeded(r.s, new, old)
			if err != nil {
				return updated, err
			}

			if refUpdated {
				updated = true
			}
		}
	}

	if tagMode == NoTags {
		return updated, nil
	}

	tags := fetchedRefs