"Branch does not exist locally" while rebasing #8487
Description
This popped up a dozen times while working through conflicts during a rebase, I don't know why and don't see anything in the output
2026-02-06 10:18:52.610 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/python-environment-tools
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-python-environments
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/thehub
2026-02-06 10:18:52.611 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 10:27:43.744 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 10:27:43.744 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 10:27:43.744 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 10:27:43.744 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:06.119 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:06.121 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:06.121 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:06.121 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.884 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.884 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.884 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.884 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.884 [info] [Review+0] Validate state in progress
2026-02-06 11:36:09.884 [info] [Review+0] Validating state...
2026-02-06 11:36:09.903 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.903 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.903 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.903 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.903 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.903 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.970 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.970 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:09.970 [info] [GitPostCommitCommands] Looking for remote. Comparing 20 local repo remotes with 15 GitHub repositories.
2026-02-06 11:36:09.970 [info] [GitPostCommitCommands] Found a repo when getting post commit commands.
2026-02-06 11:36:10.309 [info] [FolderRepositoryManager+0] Found GitHub remote for folder /Users/roblou/code/vscode
2026-02-06 11:36:10.310 [info] [FolderRepositoryManager+0] Using in-memory cached assignable users.
2026-02-06 11:36:10.355 [info] [Review+0] No matching pull request metadata found locally for current branch roblou/chronic-rhinoceros
2026-02-06 11:36:10.390 [info] [Review+0] No matching pull request metadata found on GitHub for current branch roblou/chronic-rhinoceros
2026-02-06 11:36:14.571 [info] [CreatePullRequestViewProvider] Initializing "create" view: {"canModifyBranches":true,"defaultBaseRemote":{"owner":"microsoft","repositoryName":"vscode"},"defaultBaseBranch":"roblou/sour-hare","defaultCompareRemote":{"owner":"microsoft","repositoryName":"vscode"},"defaultCompareBranch":"roblou/chronic-rhinoceros","defaultTitle":"Handle multiple post/preToolUse hooks more correctly","defaultDescription":"<!-- Thank you for submitting a Pull Request. Please:\n* Read our Pull Request guidelines:\n https://github.com/microsoft/vscode/wiki/How-to-Contribute#pull-requests\n* Associate an issue with the Pull Request.\n* Ensure that the code is up-to-date with the `main` branch.\n* Include a description of the proposed changes and how to test them.\n-->\n","defaultMergeMethod":"squash","baseHasMergeQueue":false,"remoteCount":1,"allowAutoMerge":true,"mergeMethodsAvailability":{"merge":true,"squash":true,"rebase":true},"autoMergeDefault":true,"createError":"","labels":[],"isDraftDefault":false,"isDarkTheme":true,"generateTitleAndDescriptionTitle":"Generate with Copilot","creating":false,"initializeWithGeneratedTitleAndDescription":false,"preReviewState":0,"preReviewer":"Copilot","reviewing":false,"usingTemplate":true}
2026-02-06 11:36:22.187 [warning] [GitHubRepository+0] List branches timeout hit after 5000ms.
2026-02-06 11:36:47.433 [info] [Review+0] Validate state in progress
2026-02-06 11:36:47.433 [info] [Review+0] Validating state...
2026-02-06 11:36:47.848 [info] [FolderRepositoryManager+0] Found GitHub remote for folder /Users/roblou/code/vscode
2026-02-06 11:36:47.848 [info] [FolderRepositoryManager+0] Using in-memory cached assignable users.
2026-02-06 11:36:47.849 [info] [Review+0] No matching pull request metadata found locally for current branch undefined
2026-02-06 11:36:47.879 [info] [Review+0] No matching pull request metadata found on GitHub for current branch undefined
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/custom-agents
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/custom-agents
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-release
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/debug-adapter-protocol
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/python-environment-tools
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-python-environments
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/thehub
2026-02-06 11:36:53.027 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:37:17.935 [info] [Review+0] Validate state in progress
2026-02-06 11:37:17.935 [info] [Review+0] Validating state...
2026-02-06 11:37:18.359 [info] [FolderRepositoryManager+0] Found GitHub remote for folder /Users/roblou/code/vscode
2026-02-06 11:37:18.360 [info] [FolderRepositoryManager+0] Using in-memory cached assignable users.
2026-02-06 11:37:18.360 [info] [Review+0] No matching pull request metadata found locally for current branch undefined
2026-02-06 11:37:18.406 [info] [Review+0] No matching pull request metadata found on GitHub for current branch undefined
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/custom-agents
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/custom-agents
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-release
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/debug-adapter-protocol
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-internalbacklog
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/python-environment-tools
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-python-environments
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: github/thehub
2026-02-06 11:37:53.021 [info] [FolderRepositoryManager+0] GitHubRepository not found: microsoft/vscode-copilot-chat