GITMODULES(5)                      Git Manual                      GITMODULES(5)

       gitmodules - Defining submodule properties


       The .gitmodules file, located in the top-level directory of a Git working
       tree, is a text file with a syntax matching the requirements of git-

       The file contains one subsection per submodule, and the subsection value
       is the name of the submodule. The name is set to the path where the
       submodule has been added unless it was customized with the --name option
       of git submodule add. Each submodule section also contains the following
       required keys:

           Defines the path, relative to the top-level directory of the Git
           working tree, where the submodule is expected to be checked out. The
           path name must not end with a /. All submodule paths must be unique
           within the .gitmodules file.

           Defines a URL from which the submodule repository can be cloned. This
           may be either an absolute URL ready to be passed to git-clone(1) or
           (if it begins with ./ or ../) a location relative to the
           superproject’s origin repository.

       In addition, there are a number of optional keys:

           Defines the default update procedure for the named submodule, i.e.
           how the submodule is updated by "git submodule update" command in the
           superproject. This is only used by git submodule init to initialize
           the configuration variable of the same name. Allowed values here are
           checkout, rebase, merge or none. See description of update command in
           git-submodule(1) for their meaning. For security reasons, the
           !command form is not accepted here.

           A remote branch name for tracking updates in the upstream submodule.
           If the option is not specified, it defaults to the remote HEAD. A
           special value of .  is used to indicate that the name of the branch
           in the submodule should be the same name as the current branch in the
           current repository. See the --remote documentation in git-
           submodule(1) for details.

           This option can be used to control recursive fetching of this
           submodule. If this option is also present in the submodules entry in
           .git/config of the superproject, the setting there will override the
           one found in .gitmodules. Both settings can be overridden on the
           command line by using the "--[no-]recurse-submodules" option to "git
           fetch" and "git pull".

           Defines under what circumstances "git status" and the diff family
           show a submodule as modified. The following values are supported:

               The submodule will never be considered modified (but will
               nonetheless show up in the output of status and commit when it
               has been staged).

               All changes to the submodule’s work tree will be ignored, only
               committed differences between the HEAD of the submodule and its
               recorded state in the superproject are taken into account.

               Only untracked files in submodules will be ignored. Committed
               differences and modifications to tracked files will show up.

               No modifications to submodules are ignored, all of committed
               differences, and modifications to tracked and untracked files are
               shown. This is the default option.

           If this option is also present in the submodules entry in .git/config
           of the superproject, the setting there will override the one found in

           Both settings can be overridden on the command line by using the
           "--ignore-submodules" option. The git submodule commands are not
           affected by this setting.

           When set to true, a clone of this submodule will be performed as a
           shallow clone (with a history depth of 1) unless the user explicitly
           asks for a non-shallow clone.

       Consider the following .gitmodules file:

           [submodule "libfoo"]
                   path = include/foo
                   url = git://

           [submodule "libbar"]
                   path = include/bar
                   url = git://

       This defines two submodules, libfoo and libbar. These are expected to be
       checked out in the paths include/foo and include/bar, and for both
       submodules a URL is specified which can be used for cloning the

       git-submodule(1), gitsubmodules(7), git-config(1)

       Part of the git(1) suite

Git 2.30.0                         12/28/2020                      GITMODULES(5)