// Copyright 2025 The Jujutsu Authors//// Licensed under the Apache License, Version 2.0 (the "License");// you may not use this file except in compliance with the License.// You may obtain a copy of the License at//// https://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software// distributed under the License is distributed on an "AS IS" BASIS,// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.// See the License for the specific language governing permissions and// limitations under the License. use std::io::Write as _; use jj_lib::file_util;use jj_lib::repo::Repo as _;use tracing::instrument; use crate::cli_util::CommandHelper;use crate::command_error::CommandError;use crate::command_error::user_error;use crate::ui::Ui; /// Show the underlying Git directory of a repository using the Git backend#[derive(clap::Args, Clone, Debug)]pub struct GitRootArgs {} #[instrument(skip_all)]pub fn cmd_git_root(    ui: &mut Ui,    command: &CommandHelper,    _args: &GitRootArgs,) -> Result<(), CommandError> {    let workspace_command = command.workspace_helper(ui)?;    let store = workspace_command.repo().store();    let git_backend = jj_lib::git::get_git_backend(store)?;    let path_bytes = file_util::path_to_bytes(git_backend.git_repo_path()).map_err(user_error)?;    ui.stdout().write_all(path_bytes)?;    writeln!(ui.stdout())?;    Ok(())}