diff --git a/src/git-util.ts b/src/git-util.ts
index 77b10e8..8587817 100644
--- a/src/git-util.ts
+++ b/src/git-util.ts
@@ -1,27 +1,32 @@
 import { debug, info } from "@actions/core";
-import { readdir } from "fs/promises";
+import { readdir, access } from "fs/promises";
 import * as path from "path";
 import simpleGit from "simple-git";
 
 const git = simpleGit();
 
-async function listGitDirectory() {
-  const dir = ".git";
-  const files = await readdir(dir);
-  return files.map((file) => path.join(dir, file));
+/**
+ * Fetches all commits from the remote repository
+ */
+export async function fullFetch(): Promise<void> {
+  access(path.join(".git", "shallow"))
+    .then(async () => {
+      await git.fetch(["--unshallow"]);
+    })
+    .catch(async () => {
+      await git.fetch([]);
+    });
 }
 
 export async function fetchRemoteBranches() {
-  const files = await listGitDirectory();
-  info(files.join("\n"));
-  await git.fetch(["--unshallow"]);
+  await fullFetch();
   const branches = await git.branch(["-r"]);
   return branches.all.map((branch) => branch.replace("origin/", ""));
 }
 
 export async function hasCommitsBetween(
   srcBranch: string,
-  targetBranch: string,
+  targetBranch: string
 ) {
   const commits = await git.log({
     from: srcBranch,
@@ -30,8 +35,8 @@ export async function hasCommitsBetween(
   });
   debug(
     `Commits between ${srcBranch} and ${targetBranch}: ${JSON.stringify(
-      commits,
-    )}`,
+      commits
+    )}`
   );
   return commits.total > 0;
 }