Remove leftover branch git config when deleting local branches#8832

Copilot

The "Delete local branches and remotes" command (pr.deleteLocalBranchesNRemotes) listed branches that no longer exist. getBranchDeletionItems builds its picklist from .git/config, and stale [branch "<name>"] sections (left behind when a branch is deleted out-of-band) keep those branches appearing.

Changes

deleteBranches config cleanup — after unsetting the PR metadata keys, deleteConfig now also strips any remaining branch.<name>.* entries. This happens in the existing sequential config step (config ops can't be parallelized), scoped to the exact branch prefix so other branches/remotes are untouched, and logs rather than aborts on failure.
Test mock — MockRepository gains unsetConfig, and deleteBranch now throws a realistic git "not found" error (with stderr) for missing branches.
Tests — cover cleanup for both an existing branch and an already-deleted branch with stale config.

if (this.repository.unsetConfig) {
    const prefix = `branch.${branch}.`;
    const remaining = (await this.repository.getConfigs()).filter(config => config.key.startsWith(prefix));
    for (const config of remaining) {
        await this.repository.unsetConfig(config.key);
    }
}

Note: the electron test runner could not execute in the sandbox (VS Code download is network-blocked); tests type-check and the cleanup logic was verified in isolation.

Initial plan

8545897

Copilot AI assigned Copilot and alexr00 Jul 7, 2026

Copilot started work on behalf of alexr00 July 7, 2026 10:11 View session

Copilot AI linked an issue Jul 7, 2026 that may be closed by this pull request

"Delete local branches" is showing branches that have already been deleted #8815

Open

Remove leftover branch git config when deleting local branches …

cde3c7a

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Copilot AI changed the title [WIP] Fix issue with displaying deleted local branches Remove leftover branch git config when deleting local branches Jul 7, 2026

Copilot finished work on behalf of alexr00 July 7, 2026 10:21

Copilot AI requested a review from alexr00 July 7, 2026 10:21

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Remove leftover branch git config when deleting local branches#8832