From b958152d4b9cc39a329984dd0034d1f6c9630836 Mon Sep 17 00:00:00 2001
From: Libba Lawrence <llawrence@microsoft.com>
Date: Fri, 10 Jul 2026 14:28:19 -0700
Subject: [PATCH] dont need pr read and no fork pr

---
 .github/workflows/typespec-python-regenerate.yml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/typespec-python-regenerate.yml b/.github/workflows/typespec-python-regenerate.yml
index ab4e5172397b..43d8f2ae01e3 100644
--- a/.github/workflows/typespec-python-regenerate.yml
+++ b/.github/workflows/typespec-python-regenerate.yml
@@ -20,7 +20,7 @@ on:
 permissions:
   contents: write
   issues: write
-  pull-requests: write
+  pull-requests: read
 
 # Note: with cancel-in-progress, a newer run can cancel an older one after it
 # has force-pushed the branch but before it finishes updating the tracking
@@ -71,6 +71,11 @@ jobs:
             HEAD_SHA=$(echo "$PR_JSON" | jq -r '.headRefOid')
             HEAD_OWNER=$(echo "$PR_JSON" | jq -r '.headRepositoryOwner.login')
             HEAD_REPO_NAME=$(echo "$PR_JSON" | jq -r '.headRepository.name')
+            # Reject fork PRs: head branch must be in microsoft/typespec itself
+            if [ "$HEAD_OWNER/$HEAD_REPO_NAME" != "microsoft/typespec" ]; then
+              echo "::error::Only PRs with head branches in microsoft/typespec are accepted. Fork PRs are not supported (got ${HEAD_OWNER}/${HEAD_REPO_NAME})."
+              exit 1
+            fi
             REPO="${HEAD_OWNER}/${HEAD_REPO_NAME}"
             REF="${HEAD_SHA}"
             DISPLAY_REF="PR #${PR_NUMBER} @ ${HEAD_SHA:0:7}"