diff --git a/src/Repository.ts b/src/Repository.ts
index eee1ce0..0389b95 100644
--- a/src/Repository.ts
+++ b/src/Repository.ts
@@ -1,7 +1,7 @@
 import { join } from "path";
 import storage from "./storage";
 import { RepositoryStatus, Source, Tree, TreeElement, TreeFile } from "./types";
-import { Readable, Transform } from "stream";
+import { Readable } from "stream";
 import User from "./User";
 import GitHubStream from "./source/GitHubStream";
 import GitHubDownload from "./source/GitHubDownload";
diff --git a/src/source/GitHubStream.ts b/src/source/GitHubStream.ts
index 72d1eac..ac8b454 100644
--- a/src/source/GitHubStream.ts
+++ b/src/source/GitHubStream.ts
@@ -80,7 +80,11 @@ export default class GitHubStream extends GitHubBase implements SourceBase {
   }
 
   async getFiles() {
-    return this.getTree(this.branch.commit);
+    let commit = this.branch?.commit;
+    if (!commit && this.repository.model.source.commit) {
+      commit = this.repository.model.source.commit;
+    }
+    return this.getTree(commit);
   }
 
   private async getTree(
diff --git a/src/storage/S3.ts b/src/storage/S3.ts
index 1044b91..e8765b9 100644
--- a/src/storage/S3.ts
+++ b/src/storage/S3.ts
@@ -45,7 +45,15 @@ export default class S3Storage implements StorageBase {
         .promise();
       return true;
     } catch (err) {
-      return false;
+      // check if it is a directory
+      const data = await this.client
+        .listObjectsV2({
+          Bucket: config.S3_BUCKET,
+          Prefix: path,
+          MaxKeys: 1,
+        })
+        .promise();
+      return (data.Contents?.length || 0) > 0;
     }
   }