man pages section 1: User Commands

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Updated: July 2014

git-repack (1)


git-repack - Pack unpacked objects in a repository


git repack [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [--window=<n>] [--depth=<n>]


Git Manual                                          GIT-REPACK(1)

     git-repack - Pack unpacked objects in a repository

     git repack [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [--window=<n>] [--depth=<n>]

     This script is used to combine all objects that do not
     currently reside in a "pack", into a pack. It can also be
     used to re-organize existing packs into a single, more
     efficient pack.

     A pack is a collection of objects, individually compressed,
     with delta compression applied, stored in a single file,
     with an associated index file.

     Packs are used to reduce the load on mirror systems, backup
     engines, disk storage, etc.

         Instead of incrementally packing the unpacked objects,
         pack everything referenced into a single pack.
         Especially useful when packing a repository that is used
         for private development. Use with -d. This will clean up
         the objects that git prune leaves behind, but git fsck
         --full shows as dangling.

         Note that users fetching over dumb protocols will have
         to fetch the whole new pack in order to get any
         contained object, no matter how many other objects in
         that pack they already have locally.

         Same as -a, unless -d is used. Then any unreachable
         objects in a previous pack become loose, unpacked
         objects, instead of being left in the old pack.
         Unreachable objects are never intentionally added to a
         pack, even when repacking. This option prevents
         unreachable objects from being immediately deleted by
         way of being left in the old pack and then removed.
         Instead, the loose unreachable objects will be pruned
         according to normal expiry rules with the next git gc
         invocation. See git-gc(1).

         After packing, if the newly created packs make some
         existing packs redundant, remove the redundant packs.
         Also run git prune-packed to remove redundant loose
         object files.

Git          Last change: 02/22/2012                    1

Git Manual                                          GIT-REPACK(1)

         Pass the --local option to git pack-objects. See git-

         Pass the --no-reuse-delta option to git-pack-objects,
         see git-pack-objects(1).

         Pass the --no-reuse-object option to git-pack-objects,
         see git-pack-objects(1).

         Pass the -q option to git pack-objects. See git-pack-

         Do not update the server information with git
         update-server-info. This option skips updating local
         catalog files needed to publish this repository (or a
         direct copy of it) over HTTP or FTP. See git-update-

     --window=<n>, --depth=<n>
         These two options affect how the objects contained in
         the pack are stored using delta compression. The objects
         are first internally sorted by type, size and optionally
         names and compared against the other objects within
         --window to see if using delta compression saves space.
         --depth limits the maximum delta depth; making it too
         deep affects the performance on the unpacker side,
         because delta data needs to be applied that many times
         to get to the necessary object. The default value for
         --window is 10 and --depth is 50.

         This option provides an additional limit on top of
         --window; the window size will dynamically scale down so
         as to not take up more than <n> bytes in memory. This is
         useful in repositories with a mix of large and small
         objects to not run out of memory with a large window,
         but still be able to take advantage of the large window
         for the smaller objects. The size can be suffixed with
         "k", "m", or "g".  --window-memory=0 makes memory usage
         unlimited, which is the default.

         Maximum size of each output pack file. The size can be
         suffixed with "k", "m", or "g". The minimum size allowed
         is limited to 1 MiB. If specified, multiple packfiles
         may be created. The default is unlimited, unless the
         config variable pack.packSizeLimit is set.

Git          Last change: 02/22/2012                    2

Git Manual                                          GIT-REPACK(1)

     By default, the command passes --delta-base-offset option to
     git pack-objects; this typically results in slightly smaller
     packs, but the generated packs are incompatible with
     versions of Git older than version 1.4.4. If you need to
     share your repository with such ancient Git versions, either
     directly or via the dumb http or rsync protocol, then you
     need to set the configuration variable
     repack.UseDeltaBaseOffset to "false" and repack. Access from
     old Git versions over the native protocol is unaffected by
     this option as the conversion is performed on the fly as
     needed in that case.

     See attributes(5) for descriptions of the following

     |Availability   | developer/versioning/git |
     |Stability      | Uncommitted              |
     git-pack-objects(1) git-prune-packed(1)

     Part of the git(1) suite

     This software was built from source available at  The original
     community source was downloaded from  http://git-

     Further information about this software can be found on the
     open source community website at

Git          Last change: 02/22/2012                    3