gitlab-org--gitlab-foss/doc/api/repository_submodules.md

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Create	Source Code	To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers	reference, api

Repository submodules API

Introduced in GitLab 11.5

Update existing submodule reference in repository

In some workflows, especially automated ones, it can be useful to update a submodule's reference to keep up to date other projects that use it. This endpoint allows you to update a Git submodule reference in a specific branch.

PUT /projects/:id/repository/submodules/:submodule

Attribute	Type	Required	Description
id	integer/string	yes	The ID or URL-encoded path of the project owned by the authenticated user
submodule	string	yes	URL encoded full path to the submodule. For example, lib%2Fclass%2Erb
branch	string	yes	Name of the branch to commit into
commit_sha	string	yes	Full commit SHA to update the submodule to
commit_message	string	no	Commit message. If no message is provided, a default one will be set

curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/projects/5/repository/submodules/lib%2Fmodules%2Fexample"
--data "branch=master&commit_sha=3ddec28ea23acc5caa5d8331a6ecb2a65fc03e88&commit_message=Update submodule reference"

Example response:

{
  "id": "ed899a2f4b50b4370feeea94676502b42383c746",
  "short_id": "ed899a2f4b5",
  "title": "Updated submodule example_submodule with oid 3ddec28ea23acc5caa5d8331a6ecb2a65fc03e88",
  "author_name": "Dmitriy Zaporozhets",
  "author_email": "dzaporozhets@sphereconsultinginc.com",
  "committer_name": "Dmitriy Zaporozhets",
  "committer_email": "dzaporozhets@sphereconsultinginc.com",
  "created_at": "2018-09-20T09:26:24.000-07:00",
  "message": "Updated submodule example_submodule with oid 3ddec28ea23acc5caa5d8331a6ecb2a65fc03e88",
  "parent_ids": [
    "ae1d9fb46aa2b07ee9836d49862ec4e2c46fbbba"
  ],
  "committed_date": "2018-09-20T09:26:24.000-07:00",
  "authored_date": "2018-09-20T09:26:24.000-07:00",
  "status": null
}