diff --git a/index.ts b/index.ts
index 9fddfa0..82e99f2 100644
--- a/index.ts
+++ b/index.ts
@@ -687,7 +687,7 @@ async function checkoutLocalBranch(pr: ForgejoPullRequest) {
   const branch = pr.head.ref
   const { forgejoToken } = getForgejoConfig()
 
-  await authedGit(forgejoToken, ["fetch", "origin", "--depth=100", branch])
+  await authedGit(forgejoToken, ["fetch", "origin", "--depth=100", `+${branch}:${branch}`])
   await $`git checkout ${branch}`
 }