tools/git-repo.git, branch v2.68

info: reuse branch snapshots and combine history walks

2026-09-21T20:40:06+00:00

Derive the current branch from GetBranches so attached HEAD and refs are resolved once, including overview reporting. Replace the two complementary rev-list calls in --all output with one --left-right symmetric-difference walk and partition its records in memory. Bug: 553599402 Change-Id: I01d5db804cbf591ecc0e08d6605971f0f5a38538 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/634005 Tested-by: Gavin Mak Reviewed-by: Brian Gan Commit-Queue: Gavin Mak

project: avoid unnecessary sync revision enumeration

2026-09-21T20:40:01+00:00

Skip the detached-history walk when its count will not be printed, ask rev-list --count for upstream gain, and cap the published-but-unmerged existence probe at one commit. These preserve the decisions while reducing traversal and output work. Bug: 553599402 Change-Id: I30f769c9aa5269428ece15ffcb45c50993d7c4b8 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/634004 Commit-Queue: Gavin Mak Tested-by: Gavin Mak Reviewed-by: Brian Gan

project: make fast-forward merges explicit

2026-09-21T20:39:56+00:00

Every caller expects _FastForward to reject a merge commit. Always pass --ff-only and remove the optional parameter so a violated ancestry assumption fails instead of silently creating a merge. Bug: 553599402 Change-Id: I04690b5ca675cb7d3062df08d5e20cd82f5b9e82 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/634003 Tested-by: Gavin Mak Reviewed-by: Brian Gan Commit-Queue: Gavin Mak

project: fold normal stash detection into status

2026-09-21T20:39:51+00:00

When Git 2.35 or newer supplies a stash header, use the same status snapshot for stateless dirty and stash checks. Retain rev-parse for earlier clients or when the status snapshot is unavailable. Bug: 543851900 Bug: 553599402 Change-Id: I6e310459d9c1a3ba7978f7907ae6b7a9bc611749 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/632146 Tested-by: Gavin Mak Commit-Queue: Gavin Mak Reviewed-by: Brian Gan

sync: reuse status HEAD in the bloat scan

2026-09-21T20:39:21+00:00

The shallow-project bloat check already needs dirty state. Request branch metadata in that same porcelain-v2 snapshot and use branch.oid instead of launching a separate rev-parse, with the existing calls retained as a fallback. Bug: 543851900 Bug: 553599402 Change-Id: I3e7068c2e14c025a53adf92bfe8483b876cfda9d Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/632145 Tested-by: Gavin Mak Reviewed-by: Brian Gan Commit-Queue: Gavin Mak

project: render worktree status from one snapshot

2026-09-21T20:39:16+00:00

Use porcelain-v2 branch and path records to replace the status display fan-out with one Git process on Git 2.11 and newer. Preserve the legacy renderer for older clients, force rename and ahead/behind behavior where supported, and fall back to the old divergence query only when status cannot supply branch.ab. Bug: 543851900 Bug: 553599402 Change-Id: Ic760360f4f48ab9320abf69dbbb7310dab4ac649 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/632144 Commit-Queue: Gavin Mak Reviewed-by: Brian Gan Tested-by: Gavin Mak

project: use one status snapshot for dirty checks

2026-09-21T20:37:38+00:00

On Git 2.11 and newer, replace update-index, diff-index, diff-files, and ls-files fan-out with one porcelain-v2 snapshot for IsDirty, UncommittedFiles, and HasChanges. Preserve category ordering and duplicate staged-plus-unstaged paths, and keep the exact legacy path for older Git or a failed snapshot. Bug: 543851900 Bug: 553599402 Change-Id: I309e39977e1f1d4ee6115f488d6aabb83ec3d83c Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/632143 Tested-by: Gavin Mak Reviewed-by: Brian Gan Commit-Queue: Gavin Mak

git_status: parse one porcelain v2 worktree snapshot

2026-09-21T20:36:55+00:00

Add a strict, NUL-aware parser for porcelain v2 records, including ordinary changes, renames, conflicts, untracked paths, branch divergence, and stash metadata. The reader is gated on Git 2.11, opts into newer flags only when supported, and preserves arbitrary pathname bytes. Bug: 543851900 Bug: 553599402 Change-Id: Ibae3e1056fd9866f3cb6d490745d377cda1e8fef Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/632142 Tested-by: Gavin Mak Commit-Queue: Gavin Mak Reviewed-by: Brian Gan

git_command: allow lossless capture of machine output

2026-09-21T20:36:47+00:00

NUL-delimited Git formats may contain path bytes that are not valid UTF-8. Add an opt-in byte capture mode so parsers can preserve those bytes instead of receiving backslash replacements, while continuing to decode stderr for diagnostics. Bug: 543851900 Bug: 553599402 Change-Id: Ia9dfcde065a0f6f72c785a4b96896f346e17510a Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/632141 Tested-by: Gavin Mak Commit-Queue: Gavin Mak Reviewed-by: Brian Gan

project: pass --no-filter and --no-tags in DownloadPatchSet

2026-09-21T16:19:39+00:00

In partial clone checkouts (e.g. --filter=blob:none or blob:limit=10k), DownloadPatchSet previously invoked `git fetch ` without explicit filter overrides. Consequently, git fetch applied the configured partial clone filter from the remote and omitted the blobs for the incoming change. When repo download subsequently checks out, cherry-picks, or merges the downloaded commit, Git discovers that the required blobs are missing locally and triggers on-demand unadvertised object fetches to the promisor remote (POST /git-upload-pack with `want `). On large repositories, server-side reachability validation for unadvertised objects can result in expensive graph traversals, proxy/gateway timeouts (such as HTTP 502 or connection drops), and client fetch failures: fatal: expected 'packfile' fatal: could not fetch from promisor remote Pass --no-filter (when Git >= 2.17.0) and --no-tags when fetching patch sets in DownloadPatchSet. Because the change ref is an advertised ref tip, fetching with --no-filter allows the server to generate a complete packfile containing all required blobs upfront without requiring unadvertised object reachability checks. All blobs are present in the local object database prior to checkout or cherry-pick, completely preventing on-demand promisor queries. TAG=agy CONV=bdc489e3-b20b-4ef3-b32e-549dbe21fc6c Google-Bug-Id: b/532920848 Test: pytest tests/test_project.py Change-Id: Ic6118e4edeb754f0467e0580fd1d0965a6553153 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/625621 Reviewed-by: Gavin Mak Tested-by: Sam Saccone Commit-Queue: Sam Saccone