This version contains the following fix: Ensure that GC#deleteOrphans respects pack lock If pack or index files are guarded by a pack lock (.keep file) deleteOrphans() should not touch the respective files protected by the lock file. Otherwise it may interfere with PackInserter concurrently inserting a new pack file and its index. Bug: Issue 13544 Change-Id: I656ba9b6a718857742fb4744a32dac8db654fa07