2026-02-09T19:15:21.0178281Z ##[section]Starting: Checkout dotnet/runtime@refs/pull/123379/merge to s
2026-02-09T19:15:21.0263911Z ==============================================================================
2026-02-09T19:15:21.0264860Z Task         : Get sources
2026-02-09T19:15:21.0265134Z Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.
2026-02-09T19:15:21.0265246Z Version      : 1.0.0
2026-02-09T19:15:21.0265428Z Author       : Microsoft
2026-02-09T19:15:21.0265664Z Help         : [More Information](https://go.microsoft.com/fwlink/?LinkId=798199)
2026-02-09T19:15:21.0265760Z ==============================================================================
2026-02-09T19:15:22.2680129Z Syncing repository: dotnet/runtime (GitHub)
2026-02-09T19:15:22.2685985Z ##[command]git version
2026-02-09T19:15:22.2691288Z git version 2.52.0
2026-02-09T19:15:22.2691913Z ##[command]git lfs version
2026-02-09T19:15:23.4181719Z git-lfs/3.0.2 (GitHub; linux amd64; go 1.18.1)
2026-02-09T19:15:23.4328078Z ##[command]git init "/mnt/vss/_work/1/s"
2026-02-09T19:15:23.5749774Z hint: Using 'master' as the name for the initial branch. This default branch name
2026-02-09T19:15:23.5750901Z hint: will change to "main" in Git 3.0. To configure the initial branch name
2026-02-09T19:15:23.5752102Z hint: to use in all of your new repositories, which will suppress this warning,
2026-02-09T19:15:23.5758105Z hint: call:
2026-02-09T19:15:23.5758387Z hint:
2026-02-09T19:15:23.5758963Z hint: 	git config --global init.defaultBranch <name>
2026-02-09T19:15:23.5759275Z hint:
2026-02-09T19:15:23.5759592Z hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
2026-02-09T19:15:23.5759961Z hint: 'development'. The just-created branch can be renamed via this command:
2026-02-09T19:15:23.5760264Z hint:
2026-02-09T19:15:23.5760527Z hint: 	git branch -m <name>
2026-02-09T19:15:23.5760799Z hint:
2026-02-09T19:15:23.5761134Z hint: Disable this message with "git config set advice.defaultBranchName false"
2026-02-09T19:15:23.5882062Z Initialized empty Git repository in /mnt/vss/_work/1/s/.git/
2026-02-09T19:15:23.5900135Z ##[command]git remote add origin https://github.com/dotnet/runtime
2026-02-09T19:15:23.6103369Z ##[command]git sparse-checkout disable
2026-02-09T19:15:23.6293644Z ##[command]git config gc.auto 0
2026-02-09T19:15:23.6347297Z ##[command]git config core.longpaths true
2026-02-09T19:15:23.6388975Z ##[command]git config --get-all http.https://github.com/dotnet/runtime.extraheader
2026-02-09T19:15:23.6424434Z ##[command]git config --get-all http.extraheader
2026-02-09T19:15:23.6466931Z ##[command]git config --get-regexp .*extraheader
2026-02-09T19:15:23.6502025Z ##[command]git config --get-all http.proxy
2026-02-09T19:15:23.6541888Z ##[command]git config http.version HTTP/1.1
2026-02-09T19:15:23.6593073Z ##[command]git config --get-all remote.origin.promisor
2026-02-09T19:15:23.6626560Z ##[command]git config --get-all remote.origin.partialclonefilter
2026-02-09T19:15:23.6709787Z ##[command]git --config-env=http.extraheader=env_var_http.extraheader fetch --force --tags --prune --prune-tags --progress --no-recurse-submodules origin   +refs/heads/*:refs/remotes/origin/* +refs/pull/123379/merge:refs/remotes/pull/123379/merge
2026-02-09T19:15:24.3105106Z fatal: couldn't find remote ref refs/pull/123379/merge
2026-02-09T19:15:25.1555131Z ##[warning]Git fetch failed with exit code 128, back off 4.578 seconds before retry.
2026-02-09T19:15:28.8969221Z ##[command]git --config-env=http.extraheader=env_var_http.extraheader fetch --force --tags --prune --prune-tags --progress --no-recurse-submodules origin   +refs/heads/*:refs/remotes/origin/* +refs/pull/123379/merge:refs/remotes/pull/123379/merge
2026-02-09T19:15:29.3374791Z fatal: couldn't find remote ref refs/pull/123379/merge
2026-02-09T19:15:30.2138442Z ##[warning]Git fetch failed with exit code 128, back off 5.935 seconds before retry.
2026-02-09T19:15:35.2760430Z ##[command]git --config-env=http.extraheader=env_var_http.extraheader fetch --force --tags --prune --prune-tags --progress --no-recurse-submodules origin   +refs/heads/*:refs/remotes/origin/* +refs/pull/123379/merge:refs/remotes/pull/123379/merge
2026-02-09T19:15:35.7687459Z fatal: couldn't find remote ref refs/pull/123379/merge
2026-02-09T19:15:36.6498953Z ##[error]Git fetch failed with exit code: 128
2026-02-09T19:15:36.6539054Z ##[section]Finishing: Checkout dotnet/runtime@refs/pull/123379/merge to s