Documentation/config/fetch.txt

fetch.recurseSubmodules::
	This option can be either set to a boolean value or to 'on-demand'.
	Setting it to a boolean changes the behavior of fetch and pull to
	unconditionally recurse into submodules when set to true or to not
	recurse at all when set to false. When set to 'on-demand' (the default
	value), fetch and pull will only recurse into a populated submodule
	when its superproject retrieves a commit that updates the submodule's
	reference.

fetch.fsckObjects::
	If it is set to true, git-fetch-pack will check all fetched
	objects. See `transfer.fsckObjects` for what's
	checked. Defaults to false. If not set, the value of
	`transfer.fsckObjects` is used instead.

fetch.fsck.<msg-id>::
	Acts like `fsck.<msg-id>`, but is used by
	linkgit:git-fetch-pack[1] instead of linkgit:git-fsck[1]. See
	the `fsck.<msg-id>` documentation for details.

fetch.fsck.skipList::
	Acts like `fsck.skipList`, but is used by
	linkgit:git-fetch-pack[1] instead of linkgit:git-fsck[1]. See
	the `fsck.skipList` documentation for details.

fetch.unpackLimit::
	If the number of objects fetched over the Git native
	transfer is below this
	limit, then the objects will be unpacked into loose object
	files. However if the number of received objects equals or
	exceeds this limit then the received pack will be stored as
	a pack, after adding any missing delta bases.  Storing the
	pack from a push can make the push operation complete faster,
	especially on slow filesystems.  If not set, the value of
	`transfer.unpackLimit` is used instead.

fetch.prune::
	If true, fetch will automatically behave as if the `--prune`
	option was given on the command line.  See also `remote.<name>.prune`
	and the PRUNING section of linkgit:git-fetch[1].

fetch.pruneTags::
	If true, fetch will automatically behave as if the
	`refs/tags/*:refs/tags/*` refspec was provided when pruning,
	if not set already. This allows for setting both this option
	and `fetch.prune` to maintain a 1=1 mapping to upstream
	refs. See also `remote.<name>.pruneTags` and the PRUNING
	section of linkgit:git-fetch[1].

fetch.output::
	Control how ref update status is printed. Valid values are
	`full` and `compact`. Default value is `full`. See section
	OUTPUT in linkgit:git-fetch[1] for detail.

fetch.negotiationAlgorithm::
	Control how information about the commits in the local repository is
	sent when negotiating the contents of the packfile to be sent by the
	server. Set to "skipping" to use an algorithm that skips commits in an
	effort to converge faster, but may result in a larger-than-necessary
	packfile; The default is "default" which instructs Git to use the default algorithm
	that never skips commits (unless the server has acknowledged it or one
	of its descendants).
	Unknown values will cause 'git fetch' to error out.
+
See also the `--negotiation-tip` option for linkgit:git-fetch[1].