extensions/git/src/api/api1.ts/ApiRepository/fetch
class ApiRepository:	fetch(arg0?: FetchOptions | string | undefined,
		ref?: string | undefined,
		depth?: number | undefined,
		prune?: boolean | undefined
	): Promise<void> {
		if (arg0 !== undefined && typeof arg0 !== 'string') {
			return this._repository.fetch(arg0);
		}

		return this._repository.fetch({ remote: arg0, ref, depth, prune });
	}