host: preserve bundle symlinks and finish integration test isolation

host/tests/it/hook_git.rs

@@ -4,12 +4,7 @@ use sausage::{
     process::Runtime,
     world::World,
 };
-use std::{
-    io::Write,
-    path::Path,
-    process::Stdio,
-    sync::Arc,
-};
+use std::{io::Write, path::Path, process::Stdio, sync::Arc};
 fn git(cwd: &Path, args: &[&str]) {
     assert!(
         std::process::Command::new("git")
@@ -22,6 +17,9 @@ fn git(cwd: &Path, args: &[&str]) {
 }
 #[tokio::test]
 async fn several_mb_git_push() {
+    push().await;
+}
+pub async fn push() {
     let component = crate::common::build_git().join("wasm32-wasip2/release/git.wasm");
     let temp = tempfile::tempdir().unwrap();
     let world = World::open(temp.path()).unwrap();