diff --git a/dist/index.js b/dist/index.js
index 75ae3c2f07..353cabee82 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -285,10 +285,12 @@ function createOrUpdateBranch(git, commitMessage, base, branch, branchRemoteName
             //
             // For changes on base this reset is equivalent to a rebase of the pull request branch.
             const branchCommitsAhead = yield commitsAhead(git, base, branch);
-            if ((yield git.hasDiff([`${branch}..${tempBranch}`])) ||
+            const shouldReset = (yield git.hasDiff([`${branch}..${tempBranch}`])) ||
                 branchCommitsAhead != tempBranchCommitsAhead ||
                 !(tempBranchCommitsAhead > 0) || // !isAhead
-                (yield commitsHaveDiff(git, branch, tempBranch, tempBranchCommitsAhead))) {
+                (tempBranchCommitsAhead > 0 &&
+                    (yield commitsHaveDiff(git, branch, tempBranch, tempBranchCommitsAhead)));
+            if (shouldReset) {
                 core.info(`Resetting '${branch}'`);
                 // Alternatively, git switch -C branch tempBranch
                 yield git.checkout(branch, tempBranch);
diff --git a/src/create-or-update-branch.ts b/src/create-or-update-branch.ts
index 746a3a0381..9ecfcb7899 100644
--- a/src/create-or-update-branch.ts
+++ b/src/create-or-update-branch.ts
@@ -311,12 +311,19 @@ export async function createOrUpdateBranch(
     //
     // For changes on base this reset is equivalent to a rebase of the pull request branch.
     const branchCommitsAhead = await commitsAhead(git, base, branch)
-    if (
+    const shouldReset =
       (await git.hasDiff([`${branch}..${tempBranch}`])) ||
       branchCommitsAhead != tempBranchCommitsAhead ||
       !(tempBranchCommitsAhead > 0) || // !isAhead
-      (await commitsHaveDiff(git, branch, tempBranch, tempBranchCommitsAhead))
-    ) {
+      (tempBranchCommitsAhead > 0 &&
+        (await commitsHaveDiff(
+          git,
+          branch,
+          tempBranch,
+          tempBranchCommitsAhead
+        )))
+
+    if (shouldReset) {
       core.info(`Resetting '${branch}'`)
       // Alternatively, git switch -C branch tempBranch
       await git.checkout(branch, tempBranch)