fix: only fetch default branch for Git clones

mybox/package/clone.py

@@ -6,6 +6,8 @@
 from ..utils import RunArg, async_cached, repo_version
 from .destination import Destination
 
+DEFAULT_REMOTE = "origin"
+
 
 class Clone(Destination):
     repo: str = Field(..., alias="clone")
@@ -40,6 +42,9 @@ def remote(self):
     async def get_remote_version(self) -> str:
         return await repo_version(self.remote)
 
+    async def branch_name(self, ref: str) -> str:
+        return await self.run_git_output("rev-parse", "--abbrev-ref", ref)
+
     async def install(self, *, tracker: Tracker) -> None:
         destination = await self.destination()
 
@@ -48,15 +53,16 @@ async def install(self, *, tracker: Tracker) -> None:
         if not await self.directory_exists():
             await self.driver.run("git", "clone", self.remote, destination)
 
-        await self.run_git("remote", "set-url", "origin", self.remote)
-        await self.run_git("fetch")
-        default_branch = (
-            await self.run_git_output("rev-parse", "--abbrev-ref", "origin/HEAD")
-        ).split("/")[1]
-        current_branch = await self.run_git_output("rev-parse", "--abbrev-ref", "HEAD")
+        await self.run_git("remote", "set-url", DEFAULT_REMOTE, self.remote)
+
+        default_remote_branch = await self.branch_name(f"{DEFAULT_REMOTE}/HEAD")
+        default_branch = default_remote_branch.split("/")[1]
+        await self.run_git("fetch", "--no-tags", DEFAULT_REMOTE, default_branch)
+
+        current_branch = await self.branch_name("HEAD")
         if current_branch != default_branch:
             await self.run_git("switch", default_branch)
-        await self.run_git("reset", "--hard", f"origin/{default_branch}")
+        await self.run_git("reset", "--hard", default_remote_branch)
 
         tracker.track(destination, root=self.root)