git-fetch(1) - Download objects and refs from another repository
--all
    Fetch all remotes.
-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.
--depth=<depth>
    Deepen the history of a shallow repository created by git clone with --depth=<depth> option (see git-
    clone(1)) by the specified number of commits.
--dry-run
    Show what would be done, without making any changes.
-f, --force
    When git fetch is used with <rbranch>:<lbranch> refspec, it refuses to update the local branch
    <lbranch> unless the remote branch <rbranch> it fetches is a descendant of <lbranch>. This option
    overrides that check.
-k, --keep
    Keep downloaded pack.
--multiple
    Allow several <repository> and <group> arguments to be specified. No <refspec>s may be specified.
-p, --prune
    After fetching, remove any remote-tracking branches which no longer exist on the remote.
-n, --no-tags
    By default, tags that point at objects that are downloaded from the remote repository are fetched and
    stored locally. This option disables this automatic tag following. The default behavior for a remote
    may be specified with the remote.<name>.tagopt setting. See git-config(1).
-t, --tags
    Most of the tags are fetched automatically as branch heads are downloaded, but tags that do not point
    at objects reachable from the branch heads that are being tracked will not be fetched by this
    mechanism. This flag lets all tags and their associated objects be downloaded. The default behavior
    for a remote may be specified with the remote.<name>.tagopt setting. See git-config(1).
--recurse-submodules[=yes|on-demand|no]
    This option controls if and under what conditions new commits of populated submodules should be
    fetched too. It can be used as a boolean option to completely disable recursion when set to no or to
    unconditionally recurse into all populated submodules when set to yes, which is the default when this
    option is used without any value. Use on-demand to only recurse into a populated submodule when the
    superproject retrieves a commit that updates the submodule’s reference to a commit that isn’t already
    in the local submodule clone.
--no-recurse-submodules
    Disable recursive fetching of submodules (this has the same effect as using the
    --recurse-submodules=no option).
--submodule-prefix=<path>
    Prepend <path> to paths printed in informative messages such as "Fetching submodule foo". This option
    is used internally when recursing over submodules.
--recurse-submodules-default=[yes|on-demand]
    This option is used internally to temporarily provide a non-negative default value for the
    --recurse-submodules option. All other methods of configuring fetch’s submodule recursion (such as
    settings in gitmodules(5) and git-config(1)) override this option, as does specifying
    --[no-]recurse-submodules directly.
-u, --update-head-ok
    By default git fetch refuses to update the head which corresponds to the current branch. This flag
    disables the check. This is purely for the internal use for git pull to communicate with git fetch,
    and unless you are implementing your own Porcelain you are not supposed to use it.
--upload-pack <upload-pack>
    When given, and the repository to fetch from is handled by git fetch-pack, --exec=<upload-pack> is
    passed to the command to specify non-default path for the command run on the other end.
-q, --quiet
    Pass --quiet to git-fetch-pack and silence any other internally used git commands. Progress is not
    reported to the standard error stream.
-v, --verbose
    Be verbose.
--progress
    Progress status is reported on the standard error stream by default when it is attached to a
    terminal, unless -q is specified. This flag forces progress status even if the standard error stream
    is not directed to a terminal.