persist core.sshCommand for submodules (#184)

* persist core.sshCommand for submodules

* update verbiage; add comments

* fail when submodules or ssh-key and fallback to REST API

1 files changed, 10 insertions, 0 deletions

diff --git a/src/git-source-provider.ts b/src/git-source-provider.ts
index 7ce9fb7..4bce702 100644
--- a/src/git-source-provider.ts
+++ b/src/git-source-provider.ts
@@ -57,6 +57,16 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
     core.info(
       `To create a local Git repository instead, add Git ${gitCommandManager.MinimumGitVersion} or higher to the PATH`
     )
+    if (settings.submodules) {
+      throw new Error(
+        `Input 'submodules' not supported when falling back to download using the GitHub REST API. To create a local Git repository instead, add Git ${gitCommandManager.MinimumGitVersion} or higher to the PATH.`
+      )
+    } else if (settings.sshKey) {
+      throw new Error(
+        `Input 'ssh-key' not supported when falling back to download using the GitHub REST API. To create a local Git repository instead, add Git ${gitCommandManager.MinimumGitVersion} or higher to the PATH.`
+      )
+    }
+
     await githubApiHelper.downloadRepository(
       settings.authToken,
       settings.repositoryOwner,