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fix(server): status no longer fetches a remote named after a local tracked branch - #29670
Before it reads remote status, Git status starts a background git fetch for the current branch's upstream. Some branches track a local branch whose name contains a slash. This is common in stacked work, for example git checkout -b part-2 --track feature/part-1, which sets branch.part-2.remote = .. For these branches, @{upstream} reads as feature/part-1. resolveCurrentUpstream cannot match that to a configured remote, so it falls back to splitting at the first / and treats feature as the remote name.
So while such a branch is checked out, every status refresh spawns git fetch -- feature. That fetch always fails with 'feature' does not appear to be a git repository, logs Background Git fetch failed, and retries with backoff (30 s, growing to 15 min) for as long as the branch stays checked out. There is nothing to fetch for a local upstream. Ahead/behind counts for these branches already work, because readStatusDetailsRemote compares against the whole upstream ref.
Change
The status refresh now asks Git which remote the branch tracks, with git for-each-ref --format=%(upstream:remotename) on the current branch, which reads branch.<name>.remote. It fetches nothing when the result is empty (no upstream) or . (a local upstream). This holds even when a remote happens to share the local branch's first segment, such as a remote named feature next to a local feature/base. The same %(upstream:remotename) read is already used elsewhere in GitVcsDriverCore.ts and GitManager.ts. It still runs two git reads, as before (symbolic-ref HEAD and for-each-ref). Push still uses resolveCurrentUpstream and is not changed.
Scope and approval
This is a very small, focused fix for an obvious bug, so there is no prior issue. It changes one function in GitVcsDriverCore.ts (about 15 lines) and adds one regression test.
Overlap search: I checked the local PR index and GitHub search for local upstream, tracking a local branch, background/status fetch, and refreshStatusUpstreamIfStale. The closest matches don't overlap:
The regression test also adds a remote named feature next to the local feature/base upstream (the CodeRabbit case). On the previous head, which matched configured remote names, it fails with the same fetch of feature.
Red on main: the new test does not fetch for status when the branch tracks a local branch fails with AssertionError: expected [ [ '--git-dir', …, 'fetch', '--quiet', '--no-tags', '--no-auto-gc', '--', 'feature' ] ] to deeply equal [].
Green: vp test run src/vcs/GitVcsDriverCore.test.ts gives 224 passed and 1 failed. The failure is keeps generated worktree folders short without changing long branch names, a known macOS /var vs /private/var failure that also fails on clean main. The existing can read cached remote divergence without fetching upstream test still shows that a real remote upstream is fetched.
vp test run src/git/GitManager.test.ts src/vcs/GitVcsDriver.test.ts gives 182 passed. vp test run src/vcs/VcsStatusBroadcaster.test.ts src/git/GitManager.test.ts gives 135 passed on the current head.
vp run check:changed: format, lint, knip and typecheck pass. Tests show only the same known macOS failure.
I reproduced the fetch with plain git on a scratch repo: git fetch -- feature exits 128 for a branch tracking local feature/base. In the same repo, %(upstream:remotename) prints . for that branch and nothing for a branch without an upstream.
Not checked: Windows.
Reviewed with sol-loop: 2 rounds with GPT-6.1 Sol on high (the original change and the configured-remote follow-up). Sol verdict: approved.
Created with Claude Opus 5.5 in Claude Code (T3 Code).
Macroscope's review found this PR approvable — Status refresh now distinguishes local upstream branches from actual remotes, avoiding unintended background fetches. Existing fetch safeguards remain unchanged, with no product-default or diagnostic-suppression changes.
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Inline comments:
Review comments at @apps/server/src/vcs/GitVcsDriverCore.ts:
- Around line 1663-1666: Update GitVcsDriver.refreshStatusUpstreamIfStale to
determine the upstream using the existing Git-version-compatible lookup, then
read the current branch’s configured remote instead of using the unsupported
%(upstream:remotename) format. Preserve the early return when no upstream is
configured, and ensure a reachable branch with a configured upstream continues
to the cache lookup and fetch path.
Walkthrough
Status refresh reads the current branch’s upstream remote name from Git. It skips refresh for detached branches, branches without an upstream remote, and branches that track a local branch. A test checks local-upstream status and fetch behavior.
Changes: Local upstream status
Layer / File(s)
Summary
Upstream remote check and local-upstream test apps/server/src/vcs/GitVcsDriverCore.ts, apps/server/src/vcs/GitVcsDriverCore.test.ts
refreshStatusUpstreamIfStale reads the upstream remote name and skips refresh when HEAD is detached or the remote name is empty or ".". The test verifies that statusDetailsRemote reports feature/base as the upstream and spawns no fetch command.
pingdotgg/t3code#26560 — The change does not add --no-write-fetch-head; remote-upstream status fetches can still write FETCH_HEAD, so the reported race remains for those fetches.
Suggested reviewers:t3dotgg
Merge Risk: Low · up to 21ae5
Status can remain stale on Git 2.15 or for branches ending in certain Unicode whitespace. Merge with awareness of these limited cases, or fix them first.
Pre-merge checks: 4
Check name
Status
Explanation
Title check
The title names the main change: status refresh no longer fetches a remote named after a local tracked branch. The changeset matches this. It changes refreshStatusUpstreamIfStale to read the upstream …
Description check
The description follows the template. It has Problem, Change, Scope and approval, and Verification sections. The Problem section gives the reproduction path, the failing behavior (git fetch -- feature…
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
Check skipped because no linked issues were found for this pull request.
Full details: Title check
Explanation
The title names the main change: status refresh no longer fetches a remote named after a local tracked branch. The changeset matches this. It changes refreshStatusUpstreamIfStale to read the upstream remote name via for-each-ref and skips fetch for empty or '.' remotes, and adds a regression test for a local feature/base upstream. The title follows conventional commit style and is specific.
Full details: Description check
Explanation
The description follows the template. It has Problem, Change, Scope and approval, and Verification sections. The Problem section gives the reproduction path, the failing behavior (git fetch -- feature), and the expected behavior. The Change section explains the new for-each-ref read and what it skips. The Scope section justifies the small fix without a prior issue and lists overlap checks. The Verification section gives test commands, a red-then-green result, a known unrelated macOS failure, and what was not checked (Windows). The template's HTML comments are not present in the description, which is acceptable. The description also includes a model/harness attribution line, which the template asks for when an agent was used.
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Reviewing files that changed from the base of the PR and between 7368460 and 21ae5ac.
Files selected for processing: 2
apps/server/src/vcs/GitVcsDriverCore.test.ts
apps/server/src/vcs/GitVcsDriverCore.ts
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verified unchanged head 7368460ba39dd517950033639129ee968e5d790a on linux using the real dev web app, playwright 1.60.0, /usr/bin/google-chrome, and real codex gpt-6.1-sol turns. the app created the project; provider turns created its repository, branches, commits, and local bare remote. only one dev server ran at a time.
reproduced on github/main (57cd05904d): opening git action options on stacked, tracking local feature/base, spawned git fetch -- feature and failed with feature does not appear to be a git repository.
on the pr, the same repository and thread refreshed with no fetch, both without a remote and with a real remote named feature. the client still received ahead/behind 1/0.
a branch tracking feature/main still fetched. after a separate local clone pushed a commit, the client received behind count 1 and displayed pull. clicking pull brought that exact commit and remote-only.txt into the checkout.
a branch without an upstream refreshed successfully with hasUpstream: false and no further fetch.
blacksmith: vp test run apps/server/src/vcs/GitVcsDriverCore.test.ts apps/server/src/vcs/VcsStatusBroadcaster.test.ts passed all 245 tests. no source changes or pushes were needed.
screenshots show the same local-upstream data; the fetch difference is recorded in the transcript.
Not verified
native desktop, ios/android, macos/windows, relay/tunnel connections, and hosted remote authentication were not exercised on this linux vm. the remote was a real local bare git repository. exotic trailing unicode whitespace in branch or remote names was not exercised.
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size:S10-29 changed lines (additions + deletions).vouch:trustedPR author is trusted by repo permissions or the VOUCHED list.
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Problem
Before it reads remote status, Git status starts a background
git fetchfor the current branch's upstream. Some branches track a local branch whose name contains a slash. This is common in stacked work, for examplegit checkout -b part-2 --track feature/part-1, which setsbranch.part-2.remote = .. For these branches,@{upstream}reads asfeature/part-1.resolveCurrentUpstreamcannot match that to a configured remote, so it falls back to splitting at the first/and treatsfeatureas the remote name.So while such a branch is checked out, every status refresh spawns
git fetch -- feature. That fetch always fails with'feature' does not appear to be a git repository, logsBackground Git fetch failed, and retries with backoff (30 s, growing to 15 min) for as long as the branch stays checked out. There is nothing to fetch for a local upstream. Ahead/behind counts for these branches already work, becausereadStatusDetailsRemotecompares against the whole upstream ref.Change
The status refresh now asks Git which remote the branch tracks, with
git for-each-ref --format=%(upstream:remotename)on the current branch, which readsbranch.<name>.remote. It fetches nothing when the result is empty (no upstream) or.(a local upstream). This holds even when a remote happens to share the local branch's first segment, such as a remote namedfeaturenext to a localfeature/base. The same%(upstream:remotename)read is already used elsewhere inGitVcsDriverCore.tsandGitManager.ts. It still runs two git reads, as before (symbolic-ref HEADandfor-each-ref). Push still usesresolveCurrentUpstreamand is not changed.Scope and approval
This is a very small, focused fix for an obvious bug, so there is no prior issue. It changes one function in
GitVcsDriverCore.ts(about 15 lines) and adds one regression test.Overlap search: I checked the local PR index and GitHub search for local upstream, tracking a local branch, background/status fetch, and
refreshStatusUpstreamIfStale. The closest matches don't overlap:readCurrentUpstreamReffor shadowed upstreams. This PR does not touch that function.--no-write-fetch-headto the fetch args.Verification
featurenext to the localfeature/baseupstream (the CodeRabbit case). On the previous head, which matched configured remote names, it fails with the same fetch offeature.does not fetch for status when the branch tracks a local branchfails withAssertionError: expected [ [ '--git-dir', …, 'fetch', '--quiet', '--no-tags', '--no-auto-gc', '--', 'feature' ] ] to deeply equal [].vp test run src/vcs/GitVcsDriverCore.test.tsgives 224 passed and 1 failed. The failure iskeeps generated worktree folders short without changing long branch names, a known macOS/varvs/private/varfailure that also fails on clean main. The existingcan read cached remote divergence without fetching upstreamtest still shows that a real remote upstream is fetched.vp test run src/git/GitManager.test.ts src/vcs/GitVcsDriver.test.tsgives 182 passed.vp test run src/vcs/VcsStatusBroadcaster.test.ts src/git/GitManager.test.tsgives 135 passed on the current head.vp run check:changed: format, lint, knip and typecheck pass. Tests show only the same known macOS failure.git fetch -- featureexits 128 for a branch tracking localfeature/base. In the same repo,%(upstream:remotename)prints.for that branch and nothing for a branch without an upstream.Reviewed with sol-loop: 2 rounds with GPT-6.1 Sol on high (the original change and the configured-remote follow-up). Sol verdict: approved.
Created with Claude Opus 5.5 in Claude Code (T3 Code).
🤖 Generated with Claude Code