names of reachable objects, in addition to the
	SHA-1 also display a name that describes *how* they are reachable,
	compatible with linkgit:git-rev-parse[1], e.g.
	`HEAD@{1234567890}~25^2:src/`.

--[no-]progress::
	Progress status is reported on the standard error stream by
	default when it is attached to a terminal, unless
	--no-progress or --verbose is specified. --progress forces
	progress status even if the standard error stream is not
	directed to a terminal.

--[no-]references::
	Control whether to check the references database consistency
	via 'git refs verify'. See linkgit:git-refs[1] for details.
	The default is to check the references database.

CONFIGURATION
-------------

include::includes/cmd-config-section-all.adoc[]

include::config/fsck.adoc[]

DISCUSSION
----------

git-fsck tests SHA-1 and general object sanity, and it does full tracking
of the resulting reachability and everything else. It prints out any
corruption it finds (missing or bad objects), and if you use the
`--unreachable` flag it will also print out objects that exist but that
aren't reachable from any of the specified head nodes (or the default
set, as mentioned above).

Any corrupt objects you will have to find in backups or other archives
(i.e., you can just remove them and do an 'rsync' with some other site in
the hopes that somebody else has the object you have corrupted).

If core.commitGraph is true, the commit-graph file will also be inspected
using 'git commit-graph verify'. See linkgit:git-commit-graph[1].

Extracted Diagnostics
---------------------

unreachable <type> <object>::
	The <type> object <object>, isn't actually referred to directly
	or indirectly in any of the trees or commits seen. This can
	mean that there's another root node that you're not specifying
	or that the tree is corrupt. If you haven't missed a root node
	then you might as well delete unreachable nodes since they
	can't be used.

missing <type> <object>::
	The <type> object <object>, is referred to but isn't present in
	the database.

dangling <type> <object>::
	The <type> object <object>, is present in the database but never
	'directly' used. A dangling commit could be a root node.

hash mismatch <object>::
	The database has an object whose hash doesn't match the
	object database value.
	This indicates a serious data integrity problem.


FSCK MESSAGES
-------------

The following lists the types of errors `git fsck` detects and what
each error means, with their default severity.  The severity of the
error, other than those that are marked as "(FATAL)", can be tweaked
by setting the corresponding `fsck.<msg-id>` configuration variable.

include::fsck-msgids.adoc[]


Environment Variables
---------------------

GIT_OBJECT_DIRECTORY::
	used to specify the object database root (usually $GIT_DIR/objects)

GIT_INDEX_FILE::
	used to specify the index file of the index

GIT_ALTERNATE_OBJECT_DIRECTORIES::
	used to specify additional object database roots (usually unset)

GIT
---
Part of the linkgit:git[1] suite