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1st chunk of `Documentation/fetch-options.adoc`
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--[no-]all::
	Fetch all remotes, except for the ones that has the
	`remote.<name>.skipFetchAll` configuration variable set.
	This overrides the configuration variable fetch.all`.

-a::
--append::
	Append ref names and object names of fetched refs to the
	existing contents of `.git/FETCH_HEAD`.  Without this
	option old data in `.git/FETCH_HEAD` will be overwritten.

--atomic::
	Use an atomic transaction to update local refs. Either all refs are
	updated, or on error, no refs are updated.

--depth=<depth>::
	Limit fetching to the specified number of commits from the tip of
	each remote branch history. If fetching to a 'shallow' repository
	created by `git clone` with `--depth=<depth>` option (see
	linkgit:git-clone[1]), deepen or shorten the history to the specified
	number of commits. Tags for the deepened commits are not fetched.

--deepen=<depth>::
	Similar to --depth, except it specifies the number of commits
	from the current shallow boundary instead of from the tip of
	each remote branch history.

--shallow-since=<date>::
	Deepen or shorten the history of a shallow repository to
	include all reachable commits after <date>.

--shallow-exclude=<ref>::
	Deepen or shorten the history of a shallow repository to
	exclude commits reachable from a specified remote branch or tag.
	This option can be specified multiple times.

--unshallow::
	If the source repository is complete, convert a shallow
	repository to a complete one, removing all the limitations
	imposed by shallow repositories.
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If the source repository is shallow, fetch as much as possible so that
the current repository has the same history as the source repository.

--update-shallow::
	By default when fetching from a shallow repository,
	`git fetch` refuses refs that require updating
	.git/shallow. This option updates .git/shallow and accepts such
	refs.

--negotiation-tip=<commit|glob>::
	By default, Git will report, to the server, commits reachable
	from all local refs to find common commits in an attempt to
	reduce the size of the to-be-received packfile. If specified,
	Git will only report commits reachable from the given tips.
	This is useful to speed up fetches when the user knows which
	local ref is likely to have commits in common with the
	upstream ref being fetched.
+
This option may be specified more than once; if so, Git will report
commits reachable from any of the given commits.
+
The argument to this option may be a glob on ref names, a ref, or the (possibly
abbreviated) SHA-1 of a commit. Specifying a glob is equivalent to specifying
this option multiple times, one for each matching ref name.
+
See also the `fetch.negotiationAlgorithm` and `push.negotiate`
configuration variables documented in linkgit:git-config[1], and the
`--negotiate-only` option below.

--negotiate-only::
	Do not fetch anything from the server, and instead print the
	ancestors of the provided `--negotiation-tip=*` arguments,
	which we have in common with the server.
+
This is incompatible with `--recurse-submodules=[yes|on-demand]`.
Internally this is used to implement the `push.negotiate` option, see
linkgit:git-config[1].

--dry-run::
	Show what would be done, without making any changes.

--porcelain::
	Print the output to standard output in an easy-to-parse format for
	scripts. See section OUTPUT in linkgit:git-fetch[1] for details.
+
This is incompatible with `--recurse-submodules=[yes|on-demand]` and takes
precedence over the `fetch.output` config option.

ifndef::git-pull[]
--[no-]write-fetch-head::
	Write the list of remote refs fetched in the `FETCH_HEAD`
	file directly under `$GIT_DIR`.  This is the default.
	Passing `--no-write-fetch-head` from the command line tells
	Git not to write the file.  Under `--dry-run` option, the
	file is never written.
endif::git-pull[]

-f::
--force::
	When 'git fetch' is used with `<src>:<dst>` refspec, it may
	refuse to update the local branch as discussed
ifdef::git-pull[]
	in the `<refspec>` part of the linkgit:git-fetch[1]
	documentation.

Title: Git Fetch Command Options
Summary
The git fetch command has various options to control its behavior, including all, append, atomic, depth, and more, which allow users to customize the fetching process, such as limiting the number of commits, updating local refs, and negotiating with the server to reduce the size of the packfile.