// creates a repo with user-specified path (which must not exist)// adds initial commit with empty tree use anyhow::Context;use git::objs::tree;use git_repository as git; fn main() -> anyhow::Result<()> {    // Note use of args_os:    // paths may not be UTF-8 encoded and thus can't be forced into a String.    // gitoxide does not assume encodings that aren't there    // to match the way git does it as a bare minimum and be just as flexible.    let git_dir = std::env::args_os()        .nth(1)        .context("First argument needs to be the directory to initialize the repository in")?;    let mut repo = git::init_bare(git_dir)?;     println!("Repo (bare): {:?}", repo.git_dir());     let mut tree = git::objs::Tree::empty();    let empty_tree_id = repo.write_object(&tree)?.detach();     let mut config = repo.config_snapshot_mut();    config.set_raw_value("author", None, "name", "Maria Sanchez")?;    config.set_raw_value("author", None, "email", "maria@example.com")?;    {        let repo = config.commit_auto_rollback()?;        let initial_commit_id = repo.commit("HEAD", "initial commit", empty_tree_id, git::commit::NO_PARENT_IDS)?;         println!("initial commit id with empty tree: {:?}", initial_commit_id);         let blob_id = repo.write_blob("hello world")?.into();        let entry = tree::Entry {            mode: tree::EntryMode::Blob,            oid: blob_id,            filename: "hello.txt".into(),        };         tree.entries.push(entry);        let hello_tree_id = repo.write_object(&tree)?;         let blob_commit_id = repo.commit("HEAD", "hello commit", hello_tree_id, [initial_commit_id])?;         println!("commit id for 'hello world' blob: {:?}", blob_commit_id);    }     Ok(())}