fix: improve logging when checking fork (#1246)

src/create-pull-request.ts

@@ -60,6 +60,9 @@ export async function createPullRequest(inputs: Inputs): Promise<void> {
       : baseRemote.repository
     if (inputs.pushToFork) {
       // Check if the supplied fork is really a fork of the base
+      core.info(
+        `Checking if '${branchRepository}' is a fork of '${baseRemote.repository}'`
+      )
       const parentRepository = await githubHelper.getRepositoryParent(
         branchRepository
       )