diff --git a/packages/das/src/webhook/github-fetcher.service.ts b/packages/das/src/webhook/github-fetcher.service.ts
index 0206d62..4fcc21e 100644
--- a/packages/das/src/webhook/github-fetcher.service.ts
+++ b/packages/das/src/webhook/github-fetcher.service.ts
@@ -1117,7 +1117,7 @@ export class GitHubFetcherService implements OnModuleInit {
               }
               authorAssociation
               mergedBy { login }
-              baseRef { name }
+              baseRefName
               headRef { name }
               headRepository { nameWithOwner }
               baseRefOid
@@ -1263,7 +1263,7 @@ export class GitHubFetcherService implements OnModuleInit {
             updatedAt,
             lastEditedAt: pr.lastEditedAt ?? null,
             mergedByLogin: pr.mergedBy?.login ?? null,
-            baseRef: pr.baseRef?.name ?? null,
+            baseRef: pr.baseRefName,
             headRef: pr.headRef?.name ?? null,
             headRepoFullName: pr.headRepository?.nameWithOwner ?? null,
             // head/base SHA columns are nullable in the DB but typed non-null