Select the WASI target explicitly in the remaining guest build helpers

host/tests/it/git_compat.rs

@@ -10,7 +10,15 @@ async fn default_identity_and_which() -> anyhow::Result<()> {
     let target = crate::common::build_git();
     assert!(
         std::process::Command::new("cargo")
-            .args(["build", "--release", "-p", "sausage-exec-tools", "--locked"])
+            .args([
+                "build",
+                "--release",
+                "--target",
+                "wasm32-wasip2",
+                "-p",
+                "sausage-exec-tools",
+                "--locked",
+            ])
             .current_dir(&userland)
             .status()?
             .success()

host/tests/it/undo_exec.rs

@@ -44,6 +44,8 @@ async fn tool_call_commit_and_independent_change() {
                 .args([
                     "build",
                     "--release",
+                    "--target",
+                    "wasm32-wasip2",
                     "-p",
                     "git",
                     "-p",