export async function ensureBranchHistory()

in src/github/operations/branch.ts [242:272]

• 27 lines of code
• 5 McCabe index (conditional complexity)

export async function ensureBranchHistory(branch: string, depth?: number) {
    console.log(`Fetching history of ${branch}...`);

    try {
        if (depth === undefined) {
            // For full history: unshallow if repository is shallow
            // Replace by unshallow-slice
            const isShallow = await $`test -f .git/shallow`.nothrow().then(r => r.exitCode === 0);
            if (isShallow) {
                console.log(`Repository is shallow, fetching full history...`);
                await $`git fetch --unshallow origin +${branch}:refs/remotes/origin/${branch}`;
            } else {
                await $`git fetch origin +${branch}:refs/remotes/origin/${branch}`;
            }
        } else {
            // For limited depth
            await $`git fetch origin --depth=${depth} +${branch}:refs/remotes/origin/${branch}`;
        }
        console.log(`✓ Successfully fetched ${branch} history`);
    } catch (error) {
        throw new Error(
            `❌ Failed to fetch ${branch} history. ` +
            `This could be due to:\n` +
            `• Branch "${branch}" does not exist in the repository\n` +
            `• Network connectivity issues\n` +
            `• Insufficient permissions to fetch from the repository\n` +
            `• Git authentication problems\n` +
            `Original error: ${error instanceof Error ? error.message : String(error)}`
        );
    }
}