--stat
    Instead of applying the patch, output diffstat for the input. Turns off "apply".

--numstat
    Similar to --stat, but shows the number of added and deleted lines in decimal notation and the
    pathname without abbreviation, to make it more machine friendly. For binary files, outputs two -
    instead of saying 0 0. Turns off "apply".

--summary
    Instead of applying the patch, output a condensed summary of information obtained from git diff
    extended headers, such as creations, renames and mode changes. Turns off "apply".

--check
    Instead of applying the patch, see if the patch is applicable to the current working tree and/or the
    index file and detects errors. Turns off "apply".

--index
    When --check is in effect, or when applying the patch (which is the default when none of the options
    that disables it is in effect), make sure the patch is applicable to what the current index file
    records. If the file to be patched in the working tree is not up-to-date, it is flagged as an error.
    This flag also causes the index file to be updated.

--cached
    Apply a patch without touching the working tree. Instead take the cached data, apply the patch, and
    store the result in the index without using the working tree. This implies --index.

--build-fake-ancestor=<file>
    Newer git diff output has embedded index information for each blob to help identify the original
    version that the patch applies to. When this flag is given, and if the original versions of the blobs
    are available locally, builds a temporary index containing those blobs.

    When a pure mode change is encountered (which has no index information), the information is read from
    the current index instead.

-R, --reverse
    Apply the patch in reverse.

--reject
    For atomicity, git apply by default fails the whole patch and does not touch the working tree when
    some of the hunks do not apply. This option makes it apply the parts of the patch that are
    applicable, and leave the rejected hunks in corresponding *.rej files.

-z
    When --numstat has been given, do not munge pathnames, but use a NUL-terminated machine-readable
    format.

    Without this option, each pathname output will have TAB, LF, double quotes, and backslash characters
    replaced with \t, \n, \", and \\, respectively, and the pathname will be enclosed in double quotes if
    any of those replacements occurred.

-p<n>
    Remove <n> leading slashes from traditional diff paths. The default is 1.

-C<n>
    Ensure at least <n> lines of surrounding context match before and after each change. When fewer lines
    of surrounding context exist they all must match. By default no context is ever ignored.

--unidiff-zero
    By default, git apply expects that the patch being applied is a unified diff with at least one line
    of context. This provides good safety measures, but breaks down when applying a diff generated with
    --unified=0. To bypass these checks use --unidiff-zero.

    Note, for the reasons stated above usage of context-free patches is discouraged.

--apply
    If you use any of the options marked "Turns off apply" above, git apply reads and outputs the
    requested information without actually applying the patch. Give this flag after those flags to also
    apply the patch.

--no-add
    When applying a patch, ignore additions made by the patch. This can be used to extract the common
    part between two files by first running diff on them and applying the result with this option, which
    would apply the deletion part but not the addition part.

--allow-binary-replacement, --binary
    Historically we did not allow binary patch applied without an explicit permission from the user, and
    this flag was the way to do so. Currently we always allow binary patch application, so this is a
    no-op.

--exclude=<path-pattern>
    Don’t apply changes to files matching the given path pattern. This can be useful when importing
    patchsets, where you want to exclude certain files or directories.

--include=<path-pattern>
    Apply changes to files matching the given path pattern. This can be useful when importing patchsets,
    where you want to include certain files or directories.

    When --exclude and --include patterns are used, they are examined in the order they appear on the
    command line, and the first match determines if a patch to each path is used. A patch to a path that
    does not match any include/exclude pattern is used by default if there is no include pattern on the
    command line, and ignored if there is any include pattern.

--ignore-space-change, --ignore-whitespace
    When applying a patch, ignore changes in whitespace in context lines if necessary. Context lines will
    preserve their whitespace, and they will not undergo whitespace fixing regardless of the value of the
    --whitespace option. New lines will still be fixed, though.

--whitespace=<action>
    When applying a patch, detect a new or modified line that has whitespace errors. What are considered
    whitespace errors is controlled by core.whitespace configuration. By default, trailing whitespaces
    (including lines that solely consist of whitespaces) and a space character that is immediately
    followed by a tab character inside the initial indent of the line are considered whitespace errors.

--inaccurate-eof
    Under certain circumstances, some versions of diff do not correctly detect a missing new-line at the
    end of the file. As a result, patches created by such diff programs do not record incomplete lines
    correctly. This option adds support for applying such patches by working around this bug.

-v, --verbose
    Report progress to stderr. By default, only a message about the current patch being applied will be
    printed. This option will cause additional information to be reported.

--recount
    Do not trust the line counts in the hunk headers, but infer them by inspecting the patch (e.g. after
    editing the patch without adjusting the hunk headers appropriately).

--directory=<root>
    Prepend <root> to all filenames. If a "-p" argument was also passed, it is applied before prepending
    the new root.