diff --git a/dist/index.js b/dist/index.js
index b9fb2405..44274fb1 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -3873,29 +3873,25 @@ async function getChangesSinceMergeBase(base, initialFetchDepth) {
     let noMergeBase = false;
     core.startGroup(`Searching for merge-base ${baseRef}...${exports.HEAD}`);
     try {
-        let init = true;
-        let lastCommitCount = await getCommitCount();
-        let depth = Math.max(lastCommitCount * 2, initialFetchDepth);
-        while (!(await hasMergeBase())) {
-            if (init) {
-                await exec_1.default('git', ['fetch', `--depth=${depth}`, 'origin', base, exports.HEAD]);
-                init = false;
-            }
-            else {
+        if (!(await hasMergeBase())) {
+            await exec_1.default('git', ['fetch', `--depth=${initialFetchDepth}`, 'origin', base, exports.HEAD]);
+            let depth = initialFetchDepth;
+            let lastCommitCount = await getCommitCount();
+            while (!(await hasMergeBase())) {
+                depth = Math.min(depth * 2, Number.MAX_SAFE_INTEGER);
                 await exec_1.default('git', ['fetch', `--deepen=${depth}`, 'origin', base, exports.HEAD]);
-            }
-            const commitCount = await getCommitCount();
-            if (commitCount === lastCommitCount) {
-                core.info('No more commits were fetched');
-                core.info('Last attempt will be to fetch full history');
-                await exec_1.default('git', ['fetch']);
-                if (!(await hasMergeBase())) {
-                    noMergeBase = true;
+                const commitCount = await getCommitCount();
+                if (commitCount === lastCommitCount) {
+                    core.info('No more commits were fetched');
+                    core.info('Last attempt will be to fetch full history');
+                    await exec_1.default('git', ['fetch']);
+                    if (!(await hasMergeBase())) {
+                        noMergeBase = true;
+                    }
+                    break;
                 }
-                break;
+                lastCommitCount = commitCount;
             }
-            depth = Math.min(depth * 2, Number.MAX_SAFE_INTEGER);
-            lastCommitCount = commitCount;
         }
     }
     finally {
diff --git a/src/git.ts b/src/git.ts
index b31dedf2..d81b1f55 100644
--- a/src/git.ts
+++ b/src/git.ts
@@ -64,28 +64,25 @@ export async function getChangesSinceMergeBase(base: string, initialFetchDepth:
   let noMergeBase = false
   core.startGroup(`Searching for merge-base ${baseRef}...${HEAD}`)
   try {
-    let init = true
-    let lastCommitCount = await getCommitCount()
-    let depth = Math.max(lastCommitCount * 2, initialFetchDepth)
-    while (!(await hasMergeBase())) {
-      if (init) {
-        await exec('git', ['fetch', `--depth=${depth}`, 'origin', base, HEAD])
-        init = false
-      } else {
+    if (!(await hasMergeBase())) {
+      await exec('git', ['fetch', `--depth=${initialFetchDepth}`, 'origin', base, HEAD])
+      let depth = initialFetchDepth
+      let lastCommitCount = await getCommitCount()
+      while (!(await hasMergeBase())) {
+        depth = Math.min(depth * 2, Number.MAX_SAFE_INTEGER)
         await exec('git', ['fetch', `--deepen=${depth}`, 'origin', base, HEAD])
-      }
-      const commitCount = await getCommitCount()
-      if (commitCount === lastCommitCount) {
-        core.info('No more commits were fetched')
-        core.info('Last attempt will be to fetch full history')
-        await exec('git', ['fetch'])
-        if (!(await hasMergeBase())) {
-          noMergeBase = true
+        const commitCount = await getCommitCount()
+        if (commitCount === lastCommitCount) {
+          core.info('No more commits were fetched')
+          core.info('Last attempt will be to fetch full history')
+          await exec('git', ['fetch'])
+          if (!(await hasMergeBase())) {
+            noMergeBase = true
+          }
+          break
         }
-        break
+        lastCommitCount = commitCount
       }
-      depth = Math.min(depth * 2, Number.MAX_SAFE_INTEGER)
-      lastCommitCount = commitCount
     }
   } finally {
     core.endGroup()