git-commit-graph(1)
===================

NAME
----
git-commit-graph - Write and verify Git commit-graph files


SYNOPSIS
--------
[verse]
'git commit-graph verify' [--object-dir <dir>] [--shallow] [--[no-]progress]
'git commit-graph write' [--object-dir <dir>] [--append]
			[--split[=<strategy>]] [--reachable | --stdin-packs | --stdin-commits]
			[--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]
			<split-options>


DESCRIPTION
-----------

Manage the serialized commit-graph file.


OPTIONS
-------
--object-dir::
	Use given directory for the location of packfiles and commit-graph
	file. This parameter exists to specify the location of an alternate
	that only has the objects directory, not a full `.git` directory. The
	commit-graph file is expected to be in the `<dir>/info` directory and
	the packfiles are expected to be in `<dir>/pack`. If the directory
	could not be made into an absolute path, or does not match any known
	object directory, `git commit-graph ...` will exit with non-zero
	status.

--[no-]progress::
	Turn progress on/off explicitly. If neither is specified, progress is
	shown if standard error is connected to a terminal.

COMMANDS
--------
'write'::

Write a commit-graph file based on the commits found in packfiles. If
the config option `core.commitGraph` is disabled, then this command will
output a warning, then return success without writing a commit-graph file.
+
With the `--stdin-packs` option, generate the new commit graph by
walking objects only in the specified pack-indexes. (Cannot be combined
with `--stdin-commits` or `--reachable`.)
+
With the `--stdin-commits` option, generate the new commit graph by
walking commits starting at the commits specified in stdin as a list
of OIDs in hex, one OID per line. OIDs that resolve to non-commits
(either directly, or by peeling tags) are silently ignored. OIDs that
are malformed, or do not exist generate an error. (Cannot be combined
with `--stdin-packs` or `--reachable`.)
+
With the `--reachable` option, generate the new commit graph by walking
commits starting at all refs. (Cannot be combined with `--stdin-commits`
or `--stdin-packs`.)
+
With the `--append` option, include all commits that are present in the
existing commit-graph file.
+
With the `--changed-paths` option, compute and write information about the
paths changed between a commit and its first parent. This operation can
take a while on large repositories. It provides significant performance gains
for getting history of a directory or a file with `git log -- <path>`. If
this option is given, future commit-graph writes will automatically assume
that this option was intended. Use `--no-changed-paths` to stop storing this
data.
+
With the `--max-new-filters=<n>` option, generate at most `n` new Bloom
filters (if `--changed-paths` is specified). If `n` is `-1`, no limit is
enforced. Only commits present in the new layer count against this
limit. To retroactively compute Bloom filters over