Eclipse JGit: Java implementation of Git 5.13.2

Performance Improvements

• 581723 Support the new option index.skipHash which was introduced in git 2.40. If enabled skip computing the git index checksum. This accelerates Git commands that manipulate the index, such as git add, git commit, or git status.
• Allow to perform PackedBatchRefUpdate without locking loose refs
• Shortcut during git fetch for avoiding looping through all local refs
• Allow the exclusions of refs prefixes from bitmap index generation
• 581267 PackWriterBitmapPreparer: do not include annotated tags in bitmap index
• Speedup GC listing objects referenced from reflogs
• 580310 Add option to allow using JDK's SHA1 implementation
• 579805 Do not create reflog for remote tracking branches during clone
• UploadPack: do not check reachability of visible SHA1s at the tips of an advertised ref

Bug Fixes

• 582044 Revert "RefDirectory: Throw exception if CAS of packed ref list fails"
• Prevent infinite loop rescanning the pack list on PackMismatchException
• GC: Close File.lines stream
• If tryLock fails to get the lock another gc has it
• Don't swallow IOException in GC.PidLock#lock
• Check if FileLock is valid before using or releasing it
• Acquire file lock "gc.pid" before running gc
• Add pack options to preserve and prune old pack files
• FetchCommand: fix fetchSubmodules to work on a Ref to a blob
• BatchingProgressMonitor: avoid int overflow when computing percentage
• 580953 Ignore IllegalStateException if JVM is already shutting down
• 579670 UploadPack: don't prematurely terminate timer in case of error
• 577018 Add missing package import javax.management to org.eclipse.jgit