GIT-INDEX-PACK(1)		  Git Manual		     GIT-INDEX-PACK(1)



NAME
       git-index-pack - Build pack index file for an existing packed archive

SYNOPSIS
       git index-pack [-v] [-o <index-file>] [--[no-]rev-index] <pack-file>
       git index-pack --stdin [--fix-thin] [--keep] [-v] [-o <index-file>]
			 [--[no-]rev-index] [<pack-file>]


DESCRIPTION
       Reads a packed archive (.pack) from the specified file, and builds a
       pack index file (.idx) for it. Optionally writes a reverse-index (.rev)
       for the specified pack. The packed archive together with the pack index
       can then be placed in the objects/pack/ directory of a Git repository.

OPTIONS
       -v
	   Be verbose about what is going on, including progress status.

       -o <index-file>
	   Write the generated pack index into the specified file. Without
	   this option the name of pack index file is constructed from the
	   name of packed archive file by replacing .pack with .idx (and the
	   program fails if the name of packed archive does not end with
	   .pack).

       --[no-]rev-index
	   When this flag is provided, generate a reverse index (a .rev file)
	   corresponding to the given pack. If --verify is given, ensure that
	   the existing reverse index is correct. Takes precedence over
	   pack.writeReverseIndex.

       --stdin
	   When this flag is provided, the pack is read from stdin instead and
	   a copy is then written to <pack-file>. If <pack-file> is not
	   specified, the pack is written to objects/pack/ directory of the
	   current Git repository with a default name determined from the pack
	   content. If <pack-file> is not specified consider using --keep to
	   prevent a race condition between this process and git repack.

       --fix-thin
	   Fix a "thin" pack produced by git pack-objects --thin (see git-
	   pack-objects(1) for details) by adding the excluded objects the
	   deltified objects are based on to the pack. This option only makes
	   sense in conjunction with --stdin.

       --keep
	   Before moving the index into its final destination create an empty
	   .keep file for the associated pack file. This option is usually
	   necessary with --stdin to prevent a simultaneous git repack process
	   from deleting the newly constructed pack and index before refs can
	   be updated to use objects contained in the pack.

       --keep=<msg>
	   Like --keep create a .keep file before moving the index into its
	   final destination, but rather than creating an empty file place
	   <msg> followed by an LF into the .keep file. The <msg> message can
	   later be searched for within all .keep files to locate any which
	   have outlived their usefulness.

       --index-version=<version>[,<offset>]
	   This is intended to be used by the test suite only. It allows to
	   force the version for the generated pack index, and to force 64-bit
	   index entries on objects located above the given offset.

       --strict
	   Die, if the pack contains broken objects or links.

       --progress-title
	   For internal use only.

	   Set the title of the progress bar. The title is "Receiving objects"
	   by default and "Indexing objects" when --stdin is specified.

       --check-self-contained-and-connected
	   Die if the pack contains broken links. For internal use only.

       --fsck-objects
	   For internal use only.

	   Die if the pack contains broken objects. If the pack contains a
	   tree pointing to a .gitmodules blob that does not exist, prints the
	   hash of that blob (for the caller to check) after the hash that
	   goes into the name of the pack/idx file (see "Notes").

       --threads=<n>
	   Specifies the number of threads to spawn when resolving deltas.
	   This requires that index-pack be compiled with pthreads otherwise
	   this option is ignored with a warning. This is meant to reduce
	   packing time on multiprocessor machines. The required amount of
	   memory for the delta search window is however multiplied by the
	   number of threads. Specifying 0 will cause Git to auto-detect the
	   number of CPU's and use maximum 3 threads.

       --max-input-size=<size>
	   Die, if the pack is larger than <size>.

       --object-format=<hash-algorithm>
	   Specify the given object format (hash algorithm) for the pack. The
	   valid values are sha1 and (if enabled) sha256. The default is the
	   algorithm for the current repository (set by
	   extensions.objectFormat), or sha1 if no value is set or outside a
	   repository.

	   This option cannot be used with --stdin.

	   THIS OPTION IS EXPERIMENTAL! SHA-256 support is experimental and
	   still in an early stage. A SHA-256 repository will in general not
	   be able to share work with "regular" SHA-1 repositories. It should
	   be assumed that, e.g., Git internal file formats in relation to
	   SHA-256 repositories may change in backwards-incompatible ways.
	   Only use --object-format=sha256 for testing purposes.

       --promisor[=<message>]
	   Before committing the pack-index, create a .promisor file for this
	   pack. Particularly helpful when writing a promisor pack with
	   --fix-thin since the name of the pack is not final until the pack
	   has been fully written. If a <message> is provided, then that
	   content will be written to the .promisor file for future reference.
	   See partial clone[1] for more information.

NOTES
       Once the index has been created, the hash that goes into the name of
       the pack/idx file is printed to stdout. If --stdin was also used then
       this is prefixed by either "pack\t", or "keep\t" if a new .keep file
       was successfully created. This is useful to remove a .keep file used as
       a lock to prevent the race with git repack mentioned above.

GIT
       Part of the git(1) suite

NOTES
	1. partial clone
	   file:///usr/share/doc/git-2.38.4/technical/partial-clone.html



Git 2.38.4			  02/20/2023		     GIT-INDEX-PACK(1)