## Why
Several users have reported data loss from this bug, including tracked
files being deleted or replaced and branches appearing to be reset to
the curated plugins repository. This can happen during startup, before
the model chooses to edit anything.
Ambient repository variables such as `GIT_DIR` and `GIT_WORK_TREE` can
override the repository selected by `git -C`, redirecting startup sync's
`git reset --hard` and `git clean -fdx` into the user's active
workspace.
## What
Route every startup-sync Git invocation through a shared command builder
that removes repository-local environment variables before execution.
Add regression coverage to keep those variables isolated.
Fixes#27416
## Summary
- choose the local OpenAI curated marketplace manifest based on auth:
Codex backend auth gets the existing marketplace, direct provider auth
gets `api_marketplace.json`
- include Bedrock API key auth in the direct-provider API marketplace
path
- safely skip the API marketplace when `api_marketplace.json` is absent
## Validation
- `just fmt`
- `git diff --check origin/main...HEAD`
- CI should run the full validation
## Manual Testing
### - New api marketplace not available for API key sign
1. Safely not display anything from api marketplace
<img width="1161" height="289" alt="Screenshot 2026-06-15 at 21 37 43"
src="https://github.com/user-attachments/assets/a5f16642-8a20-4ac1-a0de-1274a4c7b5b2"
/>
### - New api marketplace for API key sign in
1. Setup api_marketplace.json
```
{
"name": "openai-curated",
"interface": {
"displayName": "Codex official"
},
"plugins": [
{
"name": "linear",
"source": {
"source": "local",
"path": "./plugins/linear"
},
"policy": {
"installation": "AVAILABLE",
"authentication": "ON_INSTALL"
},
"category": "Productivity"
}
]
}
```
2. Log in with API key, observe that only the defined plugin from
api_marketplace.json is available from "Codex Official" (outside of
local testing marketplaces)
<img width="1167" height="446" alt="Screenshot 2026-06-15 at 21 16 53"
src="https://github.com/user-attachments/assets/7cf61477-d826-4ef6-bc05-0a23ac1c0259"
/>
also checked functionality on codex app
### - SiWC users
Still uses 'default' marketplace.json and renders all plugins
<img width="1171" height="502" alt="Screenshot 2026-06-15 at 21 40 25"
src="https://github.com/user-attachments/assets/d212ea9b-0aa5-470b-8ea4-450efe65bb2b"
/>
also checked functionality on codex app
## Notes
- `just test -p codex-core-plugins` was started locally before splitting
branches, but I stopped relying on local tests per follow-up and left
final validation to PR CI.
# Summary
Reduce download traffic to `github.com/openai/plugins` while continuing
to check for updates on every Codex startup.
# Root cause
The startup sync replaced the local repository with a fresh shallow
clone whenever the remote revision changed. At Codex's global scale,
repeatedly downloading the repository created excessive GitHub traffic.
# Changes
- Run `git ls-remote` on each startup to read the remote HEAD SHA.
- Skip all repository downloads when the local and remote SHAs match.
- Update existing checkouts with an exact-SHA shallow `git fetch`,
followed by reset and clean.
- Bootstrap new installations with `git init` plus the same shallow
fetch, rather than cloning.
- Keep the existing file lock so concurrent Codex processes serialize
updates and do not duplicate fetches.
- Preserve the existing GitHub HTTP and export archive fallback
behavior.
# Impact
Each startup makes one lightweight remote HEAD check. Repository objects
are downloaded only when the revision changes, and existing Git objects
are reused during updates.
# Validation
- `just test -p codex-core-plugins startup_sync` (15 tests passed)
- `just test -p codex-core-plugins` (201 tests passed)
- `just clippy -p codex-core-plugins` (passes with one pre-existing
`large_enum_variant` warning)
- Production app-server smoke test against GitHub:
- Fresh home: `ls-remote`, `git init`, one exact-SHA shallow fetch
- Unchanged restart: `ls-remote` and local `rev-parse` only; no fetch or
clone
- Bench smoke passed
Eric Traut