refactor(sync[hg]): Use cmd via attribute

Author: tony

src/libvcs/sync/hg.py

@@ -12,6 +12,7 @@
 import pathlib
 from typing import Any
 
+from libvcs._internal.types import StrPath
 from libvcs.cmd.hg import Hg
 
 from .base import BaseSync
@@ -22,15 +23,33 @@
 class HgSync(BaseSync):
     bin_name = "hg"
     schemes = ("hg", "hg+http", "hg+https", "hg+file")
+    cmd: Hg
+
+    def __init__(
+        self,
+        *,
+        url: str,
+        dir: StrPath,
+        **kwargs: Any,
+    ) -> None:
+        """A hg repository.
+
+        Parameters
+        ----------
+        url : str
+            URL in subversion repository
+        """
+        super().__init__(url=url, dir=dir, **kwargs)
+
+        self.cmd = Hg(dir=dir, progress_callback=self.progress_callback)
 
     def obtain(self, *args: Any, **kwargs: Any) -> None:
-        cmd = Hg(dir=self.dir)
-        cmd.clone(
+        self.cmd.clone(
             no_update=True,
             quiet=True,
             url=self.url,
         )
-        cmd.update(
+        self.cmd.update(
             quiet=True,
             check_returncode=True,
         )
@@ -39,11 +58,9 @@ def get_revision(self) -> str:
         return self.run(["parents", "--template={rev}"])
 
     def update_repo(self, *args: Any, **kwargs: Any) -> None:
-        cmd = Hg(dir=self.dir)
-
         if not pathlib.Path(self.dir / ".hg").exists():
             self.obtain()
             self.update_repo()
         else:
-            cmd.update()
-            cmd.pull(update=True)
+            self.cmd.update()
+            self.cmd.pull(update=True)