diff --git a/tools/bump-pack/src/derive-shas.ts b/tools/bump-pack/src/derive-shas.ts
index 6ba7f35ab03..04abede120d 100644
--- a/tools/bump-pack/src/derive-shas.ts
+++ b/tools/bump-pack/src/derive-shas.ts
@@ -74,6 +74,7 @@ async function findSuccessfulCommit(branchName: string) {
       try {
         betterExec(`git branch -D --force ${tmpBranchName}`);
       } catch {}
+      betterExec(`git switch -c ${baseBranchName}`);
       betterExec(`git switch -c ${branchName}`);
       betterExec(`git reset --hard ${actualPRHeadSha}`);