Snapshot only committed extensions and publish the last-good marker atomically

userland/git/src/lib.rs

@@ -1,5 +1,6 @@
 //! Local Git operations adapted from the v2 gix plugin, without RPC or host imports.
 #![allow(dead_code)]
+mod archive;
 mod branches;
 mod changes;
 mod checkout;
@@ -78,6 +79,14 @@ pub struct Cli {
 }
 #[derive(Subcommand)]
 enum Command {
+    Archive {
+        #[arg(long, default_value = "tar", value_parser = ["tar"])]
+        format: String,
+        #[arg(short = 'o', long)]
+        output: Option<std::path::PathBuf>,
+        revision: String,
+        path: Option<String>,
+    },
     Show {
         #[arg(short = 's', long = "no-patch")]
         no_patch: bool,
@@ -1501,6 +1510,14 @@ pub fn run(cli: Cli) -> Result<i32> {
                 )?;
             }
         },
+        Command::Archive {
+            format: _,
+            output,
+            revision,
+            path,
+        } => {
+            archive::archive(&repository, &revision, path.as_deref(), output.as_deref())?;
+        }
         Command::CatFile {
             kind,
             pretty: _,