feat(fetch): add fetch-mode to work around HuggingFace clone failures (bug 2047876) - #1046

[taskcluster 2026-10-22T14:07:18.747Z] Worker Type (mozilla-t/pre-commit) settings:
[taskcluster 2026-10-22T14:07:18.747Z]   {
[taskcluster 2026-10-22T14:07:18.747Z]     "generic-worker": {
[taskcluster 2026-10-22T14:07:18.747Z]       "config": {
[taskcluster 2026-10-22T14:07:18.747Z]         "capacity": 1,
[taskcluster 2026-10-22T14:07:18.747Z]         "headlessTasks": true
[taskcluster 2026-10-22T14:07:18.747Z]       },
[taskcluster 2026-10-22T14:07:18.747Z]       "engine": "multiuser",
[taskcluster 2026-10-22T14:07:18.747Z]       "go-arch": "amd64",
[taskcluster 2026-10-22T14:07:18.747Z]       "go-os": "linux",
[taskcluster 2026-10-22T14:07:18.747Z]       "go-version": "go1.27.1",
[taskcluster 2026-10-22T14:07:18.747Z]       "release": "https://github.com/taskcluster/taskcluster/releases/tag/v110.1.0",
[taskcluster 2026-10-22T14:07:18.747Z]       "revision": "8522ee4ea64acdb407128264f3b3b56a2e24c2d9",
[taskcluster 2026-10-22T14:07:18.747Z]       "source": "https://github.com/taskcluster/taskcluster/commits/8522ee4ea64acdb407128264f3b3b56a2e24c2d9",
[taskcluster 2026-10-22T14:07:18.747Z]       "version": "110.1.0"
[taskcluster 2026-10-22T14:07:18.747Z]     },
[taskcluster 2026-10-22T14:07:18.747Z]     "image": "projects/taskcluster-imaging/global/images/gw-fxci-gcp-l1-2404-amd64-headless-googlecompute-2026-09-30",
[taskcluster 2026-10-22T14:07:18.747Z]     "instance-id": "5770767986632974785",
[taskcluster 2026-10-22T14:07:18.747Z]     "instance-type": "projects/887720501152/machineTypes/c3d-standard-4",
[taskcluster 2026-10-22T14:07:18.747Z]     "local-ipv4": "10.128.3.110",
[taskcluster 2026-10-22T14:07:18.747Z]     "project-id": "fxci-production-level1-workers",
[taskcluster 2026-10-22T14:07:18.747Z]     "public-hostname": "mozilla-t-pre-commit-aodayl-tswqzb7b8acbwqw.c.fxci-production-level1-workers.internal",
[taskcluster 2026-10-22T14:07:18.747Z]     "public-ipv4": "34.132.237.214",
[taskcluster 2026-10-22T14:07:18.747Z]     "region": "us-central1",
[taskcluster 2026-10-22T14:07:18.747Z]     "zone": "us-central1-f"
[taskcluster 2026-10-22T14:07:18.747Z]   }
[taskcluster 2026-10-22T14:07:18.747Z] Task ID: ERYeYqMSTuOfT2eC_4HV8w
[taskcluster 2026-10-22T14:07:18.747Z] === Task Starting ===
[taskcluster 2026-10-22T14:07:19.657Z] [mounts] Moving existing writable directory cache lint-pre-commit-repos-v1 from /home/generic-worker/caches/UqMJ5IaiRIKFCiq3_ZX5jw to /home/task_ERYeYqMSTuOfT_0/cache0
[taskcluster 2026-10-22T14:07:19.657Z] [mounts] Creating directory /home/task_ERYeYqMSTuOfT_0
[taskcluster 2026-10-22T14:07:19.667Z] [mounts] Successfully mounted writable directory cache '/home/task_ERYeYqMSTuOfT_0/cache0'
[taskcluster 2026-10-22T14:07:19.667Z] [mounts] Moving existing writable directory cache lint-pre-commit-checkout-taskcluster-taskgraph-v1 from /home/generic-worker/caches/QQG0LIgsSjqg6YsKhhFOjw to /home/task_ERYeYqMSTuOfT_0/cache1
[taskcluster 2026-10-22T14:07:19.667Z] [mounts] Creating directory /home/task_ERYeYqMSTuOfT_0
[taskcluster 2026-10-22T14:07:19.678Z] [mounts] Successfully mounted writable directory cache '/home/task_ERYeYqMSTuOfT_0/cache1'
[taskcluster 2026-10-22T14:07:19.678Z] [mounts] Moving existing writable directory cache lint-pre-commit-uv-v1 from /home/generic-worker/caches/ATfBQthORw6xCtkdB7ckRA to /home/task_ERYeYqMSTuOfT_0/cache2
[taskcluster 2026-10-22T14:07:19.678Z] [mounts] Creating directory /home/task_ERYeYqMSTuOfT_0
[taskcluster 2026-10-22T14:07:19.688Z] [mounts] Successfully mounted writable directory cache '/home/task_ERYeYqMSTuOfT_0/cache2'
[taskcluster 2026-10-22T14:07:19.689Z] [d2g] Using cached docker image "docker.io/mozillareleases/taskgraph:run-task-v24.3.0@sha256:1efe26cb74bd09fa0f2a051b4559ab7cde4270d92f4e7c7dce7242468a21e6af"
[taskcluster 2026-10-22T14:07:19.691Z] Executing command 0: docker run -t --name taskcontainer_TJFgyOmbQ0qX8FL_cIkEGA --memory-swap -1 --pids-limit -1 --pull=never --log-driver=none '--add-host=localhost.localdomain:127.0.0.1' -v '/home/task_ERYeYqMSTuOfT_0/cache0:/builds/worker/.cache/pre-commit' -v /home/task_ERYeYqMSTuOfT_0/cache1:/builds/worker/checkouts -v '/home/task_ERYeYqMSTuOfT_0/cache2:/builds/worker/.cache/uv' --network gw-task-ERYeYqMSTuOf-0 '--add-host=taskcluster:172.18.0.1' --env-file 'env.list' -- 'mozillareleases/taskgraph:run-task-v24.3.0@sha256:1efe26cb74bd09fa0f2a051b4559ab7cde4270d92f4e7c7dce7242468a21e6af' run-task --src-checkout=/builds/worker/checkouts/src --task-cwd=/builds/worker/checkouts/src -- bash -c 'uv tool install pre-commit && /builds/worker/.local/bin/pre-commit run --all-files'
[setup 2026-10-22T14:07:19.926+00:00] run-task started in /
[setup 2026-10-22T14:07:19.926+00:00] Invoked by command: --src-checkout=/builds/worker/checkouts/src --task-cwd=/builds/worker/checkouts/src -- bash -c uv tool install pre-commit && /builds/worker/.local/bin/pre-commit run --all-files
[setup 2026-10-22T14:07:19.926+00:00] Python version: 3.13.5
[setup 2026-10-22T14:07:19.926+00:00] Subprocess python version: 
cpython-3.13.5-linux-x86_64-gnu    /usr/bin/python3.13
cpython-3.13.5-linux-x86_64-gnu    /usr/bin/python3 -> python3.13
[cache 2026-10-22T14:07:20.009+00:00] cache /builds/worker/.cache/uv exists; requirements: gid=1000 uid=1000 version=1
[cache 2026-10-22T14:07:20.009+00:00] cache /builds/worker/.cache/pre-commit exists; requirements: gid=1000 uid=1000 version=1
[cache 2026-10-22T14:07:20.009+00:00] cache /builds/worker/checkouts exists; requirements: gid=1000 uid=1000 version=1
[setup 2026-10-22T14:07:20.010+00:00] running as worker:worker
[vcs 2026-10-22T14:07:20.010+00:00] executing ['git', 'config', '--global', '--add', 'safe.directory', '/builds/worker/checkouts/src']
[vcs 2026-10-22T14:07:20.011+00:00] executing ['git', 'config', '--global', 'checkout.workers', '0']
[vcs 2026-10-22T14:07:20.014+00:00] executing ['git', 'remote', 'set-url', 'origin', 'https://github.com/JohanLorenzo/taskgraph']
[vcs 2026-10-22T14:07:20.016+00:00] executing ['git', 'fetch', 'origin', 'bug-2047876']
[vcs 2026-10-22T14:07:20.299+00:00] From https://github.com/JohanLorenzo/taskgraph
[vcs 2026-10-22T14:07:20.299+00:00]  * branch            bug-2047876 -> FETCH_HEAD
[vcs 2026-10-22T14:07:20.300+00:00]  + a859b65...e8c5cb9 bug-2047876 -> origin/bug-2047876  (forced update)
[vcs 2026-10-22T14:07:20.303+00:00] executing ['git', 'checkout', '-f', '-B', 'bug-2047876', 'e8c5cb927baacc7869b2167f1721ff0f9ef4fcac']
[vcs 2026-10-22T14:07:20.314+00:00] Switched to and reset branch 'bug-2047876'
[vcs 2026-10-22T14:07:20.315+00:00] cleaning git checkout...
[vcs 2026-10-22T14:07:20.315+00:00] executing ['git', 'clean', '-nxdff']
[vcs 2026-10-22T14:07:20.317+00:00] removing ['/builds/worker/checkouts/src/.ruff_cache/']
[vcs 2026-10-22T14:07:20.319+00:00] successfully cleaned git checkout!
[vcs 2026-10-22T14:07:20.320+00:00] TinderboxPrint:<a href='https://github.com/JohanLorenzo/taskgraph/commit/e8c5cb927baacc7869b2167f1721ff0f9ef4fcac' title='Built from taskgraph commit e8c5cb927baacc7869b2167f1721ff0f9ef4fcac'>e8c5cb927baacc7869b2167f1721ff0f9ef4fcac</a>
PERFHERDER_DATA: {"framework": {"name": "vcs"}, "suites": [{"extraOptions": ["projects/887720501152/machineTypes/c3d-standard-4"], "lowerIsBetter": true, "name": "pull", "shouldAlert": false, "subtests": [], "value": 0.2864339351654053}, {"extraOptions": ["projects/887720501152/machineTypes/c3d-standard-4"], "lowerIsBetter": true, "name": "update", "shouldAlert": false, "subtests": [], "value": 0.012079000473022461}, {"extraOptions": ["projects/887720501152/machineTypes/c3d-standard-4"], "lowerIsBetter": true, "name": "purge", "shouldAlert": false, "subtests": [], "value": 0.004111051559448242}, {"extraOptions": ["projects/887720501152/machineTypes/c3d-standard-4"], "lowerIsBetter": true, "name": "overall", "shouldAlert": false, "subtests": [], "value": 0.30440330505371094}, {"extraOptions": ["projects/887720501152/machineTypes/c3d-standard-4"], "lowerIsBetter": true, "name": "overall_pull", "shouldAlert": false, "subtests": [], "value": 0.30440330505371094}, {"extraOptions": ["projects/887720501152/machineTypes/c3d-standard-4"], "lowerIsBetter": true, "name": "overall_pull_fullcheckout", "shouldAlert": false, "subtests": [], "value": 0.30440330505371094}]}
[setup 2026-10-22T14:07:20.321+00:00] UV_CACHE_DIR is /builds/worker/.cache/uv
[task 2026-10-22T14:07:20.321+00:00] executing ['bash', '-c', 'uv tool install pre-commit && /builds/worker/.local/bin/pre-commit run --all-files']
[task 2026-10-22T14:07:20.398+00:00] Resolved 11 packages in 67ms
[task 2026-10-22T14:07:20.402+00:00] warning: Failed to hardlink files; falling back to full copy. This may lead to degraded performance.
[task 2026-10-22T14:07:20.402+00:00]          If the cache and target directories are on different filesystems, hardlinking may not be supported.
[task 2026-10-22T14:07:20.402+00:00]          If this is intentional, set `export UV_LINK_MODE=copy` or use `--link-mode=copy` to suppress this warning.
[task 2026-10-22T14:07:20.416+00:00] Installed 11 packages in 16ms
[task 2026-10-22T14:07:20.416+00:00]  + cfgv==3.5.0
[task 2026-10-22T14:07:20.416+00:00]  + distlib==0.4.4
[task 2026-10-22T14:07:20.416+00:00]  + filelock==4.2.4
[task 2026-10-22T14:07:20.416+00:00]  + identify==2.6.20
[task 2026-10-22T14:07:20.416+00:00]  + nodeenv==1.11.0
[task 2026-10-22T14:07:20.416+00:00]  + packaging==26.3
[task 2026-10-22T14:07:20.416+00:00]  + platformdirs==4.13.5
[task 2026-10-22T14:07:20.418+00:00]  + pre-commit==4.7.0
[task 2026-10-22T14:07:20.418+00:00]  + python-discovery==1.6.4
[task 2026-10-22T14:07:20.418+00:00]  + pyyaml==6.0.3
[task 2026-10-22T14:07:20.418+00:00]  + virtualenv==21.14.12
[task 2026-10-22T14:07:20.418+00:00] Installed 1 executable: pre-commit
[task 2026-10-22T14:07:20.418+00:00] warning: `/builds/worker/.local/bin` is not on your PATH. To use installed tools, run `export PATH="/builds/worker/.local/bin:$PATH"` or `uv tool update-shell`.
[task 2026-10-22T14:07:20.728+00:00] trim trailing whitespace.................................................Passed
[task 2026-10-22T14:07:20.787+00:00] fix end of files.........................................................Passed
[task 2026-10-22T14:07:20.911+00:00] check yaml...............................................................Passed
[task 2026-10-22T14:07:20.977+00:00] check for added large files..............................................Passed
[task 2026-10-22T14:07:21.013+00:00] ruff (legacy alias)......................................................Passed
[task 2026-10-22T14:07:21.049+00:00] ruff format..............................................................Passed
[task 2026-10-22T14:07:21.070+00:00] uv-lock..................................................................Passed
[task 2026-10-22T14:07:21.286+00:00] yamllint.................................................................Passed
[task 2026-10-22T14:07:21.555+00:00] codespell................................................................Passed
[taskcluster 2026-10-22T14:07:22.075Z]                        Exit Code: 0
[taskcluster 2026-10-22T14:07:22.075Z]                        User Time: 11.445ms
[taskcluster 2026-10-22T14:07:22.075Z]                      Kernel Time: 13.734ms
[taskcluster 2026-10-22T14:07:22.075Z]                        Wall Time: 2.383095856s
[taskcluster 2026-10-22T14:07:22.075Z]  Average Available System Memory: 14.32 GiB
[taskcluster 2026-10-22T14:07:22.075Z]       Average System Memory Used: 1.29 GiB
[taskcluster 2026-10-22T14:07:22.075Z]          Peak System Memory Used: 1.35 GiB
[taskcluster 2026-10-22T14:07:22.075Z]              Total System Memory: 15.61 GiB
[taskcluster 2026-10-22T14:07:22.075Z]                           Result: SUCCEEDED
[taskcluster 2026-10-22T14:07:22.075Z] === Task Finished ===
[taskcluster 2026-10-22T14:07:22.075Z] Task Duration: 2.383503677s
[taskcluster 2026-10-22T14:07:22.109Z] [mounts] Preserving cache: Moving "/home/task_ERYeYqMSTuOfT_0/cache0" to "/home/generic-worker/caches/UqMJ5IaiRIKFCiq3_ZX5jw"
[taskcluster 2026-10-22T14:07:22.109Z] [mounts] Preserving cache: Moving "/home/task_ERYeYqMSTuOfT_0/cache1" to "/home/generic-worker/caches/QQG0LIgsSjqg6YsKhhFOjw"
[taskcluster 2026-10-22T14:07:22.109Z] [mounts] Preserving cache: Moving "/home/task_ERYeYqMSTuOfT_0/cache2" to "/home/generic-worker/caches/ATfBQthORw6xCtkdB7ckRA"