Merge branch 'kn/fix-fetch-backfill-tag-with-batched-ref-updates'

"git fetch" that involves fetching tags, when a tag being fetched needs to overwrite existing one, failed to fetch other tags, which has been corrected. * kn/fix-fetch-backfill-tag-with-batched-ref-updates: fetch: fix failed batched updates skipping operations fetch: fix non-conflicting tags not being committed fetch: extract out reference committing logic