From 7620c684ebf2caf1983d473953f86c7057932b9c Mon Sep 17 00:00:00 2001
From: morgankrey <morgan@zed.dev>
Date: Tue, 17 Feb 2026 11:59:47 -0600
Subject: [PATCH] ci: Harden background-agent MVP git authentication loop
 (#49373)
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## Summary
- refresh git auth headers before each per-crash iteration in
`background_agent_mvp`
- add guarded `git fetch`/`git checkout` handling so one candidate auth
failure doesn’t fail the entire run

## Context
- fixes the auth failure seen in workflow run 22106378719 (`fatal: could
not read Username for 'https://github.com'`)
- related Linear issue: BIZOPS-853

## Testing
- ruby -e "require 'yaml';
YAML.load_file('.github/workflows/background_agent_mvp.yml')"

Release Notes:

- N/A
---
 .github/workflows/background_agent_mvp.yml | 15 ++++++++++++---
 script/run-background-agent-mvp-local      |  2 +-
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/background_agent_mvp.yml b/.github/workflows/background_agent_mvp.yml
index 02f9bf04cded52b9b2ac952ec362594ae4332f54..633b2339f00eed1d14899ca1a6d45d2d2b3c1fc8 100644
--- a/.github/workflows/background_agent_mvp.yml
+++ b/.github/workflows/background_agent_mvp.yml
@@ -148,8 +148,17 @@ jobs:
               continue
             fi
 
-            git fetch origin main
-            git checkout -B "$BRANCH" origin/main
+            git config --local http.https://github.com/.extraheader "AUTHORIZATION: bearer ${GH_TOKEN}"
+
+            if ! git fetch origin main; then
+              echo "WARNING: Failed to fetch origin/main for $CRASH_ID — skipping"
+              continue
+            fi
+
+            if ! git checkout -B "$BRANCH" origin/main; then
+              echo "WARNING: Failed to create checkout branch $BRANCH for $CRASH_ID — skipping"
+              continue
+            fi
 
             CRASH_DATA_FILE="/tmp/crash-data/crash-${CRASH_ID}.md"
             if [ ! -f "$CRASH_DATA_FILE" ]; then
@@ -170,7 +179,7 @@ jobs:
           2. Follow .factory/prompts/crash/investigate.md and write ANALYSIS.md
           3. Follow .factory/prompts/crash/link-issues.md and write LINKED_ISSUES.md
           4. Follow .factory/prompts/crash/fix.md to implement a minimal fix with tests
-          5. Run validators required by the fix prompt for the affected crate(s)
+          5. Run validators required by the fix prompt for the affected code paths
           6. Write PR_BODY.md with sections:
              - Crash Summary
              - Root Cause
diff --git a/script/run-background-agent-mvp-local b/script/run-background-agent-mvp-local
index a229b6af9e54fa58f79e5818a4145c9da8eda210..c04bf4053706cef44f3bef33b69636c3e12f364e 100755
--- a/script/run-background-agent-mvp-local
+++ b/script/run-background-agent-mvp-local
@@ -147,7 +147,7 @@ Required workflow:
 2. Follow .factory/prompts/crash/investigate.md and write ANALYSIS.md
 3. Follow .factory/prompts/crash/link-issues.md and write LINKED_ISSUES.md
 4. Follow .factory/prompts/crash/fix.md to implement a minimal fix with tests
-5. Run validators required by the fix prompt for the affected crate(s)
+5. Run validators required by the fix prompt for the affected code paths
 6. Write PR_BODY.md with sections:
    - Crash Summary
    - Root Cause