From 38cd156730b4cb5dbcab5f29df2435aa38e06811 Mon Sep 17 00:00:00 2001
From: Wiktor Kwapisiewicz <wiktor@metacode.biz>
Date: Tue, 18 Feb 2025 12:26:43 +0100
Subject: [PATCH] Ask git to checkout a submodule even if it is skipped in
 `.gitmodules`

Setting a submodule as `update = none` is a common way to make cargo
skip the submodule. Unfortunately this makes `actions/checkout` skip
the submodule too, even if it's configured to fetch submodules.

This patch adds an option that is a default in git but causes the
submodules to be available even if skipped otherwise.

See: https://github.com/actions/checkout/issues/915
See: https://github.com/rust-lang/cargo/issues/4247#issuecomment-1149178736
See: https://git-scm.com/docs/git-submodule#Documentation/git-submodule.txt---checkout
---
 dist/index.js              | 2 +-
 src/git-command-manager.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dist/index.js b/dist/index.js
index b0db713..87d720d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -796,7 +796,7 @@ class GitCommandManager {
     submoduleUpdate(fetchDepth, recursive) {
         return __awaiter(this, void 0, void 0, function* () {
             const args = ['-c', 'protocol.version=2'];
-            args.push('submodule', 'update', '--init', '--force');
+            args.push('submodule', 'update', '--init', '--force', '--checkout');
             if (fetchDepth > 0) {
                 args.push(`--depth=${fetchDepth}`);
             }
diff --git a/src/git-command-manager.ts b/src/git-command-manager.ts
index 8e42a38..a2a3bda 100644
--- a/src/git-command-manager.ts
+++ b/src/git-command-manager.ts
@@ -411,7 +411,7 @@ class GitCommandManager {
 
   async submoduleUpdate(fetchDepth: number, recursive: boolean): Promise<void> {
     const args = ['-c', 'protocol.version=2']
-    args.push('submodule', 'update', '--init', '--force')
+    args.push('submodule', 'update', '--init', '--force', '--checkout')
     if (fetchDepth > 0) {
       args.push(`--depth=${fetchDepth}`)
     }