Do not rely on local repo having test branches.

Author: de-vri-es

.github/workflows/rust.yml

@@ -7,11 +7,6 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
-    - name: Create local branches for tests
-      run: |
-        for branch in test-root test-module-{a,b,c}; do
-          git branch --track "$branch" "origin/$branch"
-        done
     - name: Build
       run: cargo +stable build --verbose
     - name: Run tests
@@ -24,11 +19,6 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
-    - name: Create local branches for tests
-      run: |
-        for branch in test-root test-module-{a,b,c}; do
-          git branch --track "$branch" "origin/$branch"
-        done
     - name: Build
       run: cargo +nightly build --verbose
     - name: Run tests

git-version/tests/version.rs

@@ -28,19 +28,47 @@ fn test_in_external_clone() {
 	let target_dir = target_dir.join("tests_target");
 
 	let_assert!(Ok(result) = std::process::Command::new("git")
-		.arg("-c")
-		.arg("protocol.file.allow=always")
 		.arg("clone")
 		.arg("--quiet")
-		.arg("--recurse-submodules")
-		.arg("-b")
-		.arg("test-root")
 		.arg((lib_dir).join(".."))
 		.arg(tempdir.path())
 		.status()
 	);
 	assert!(result.success(), "git clone: {result}");
 
+	let_assert!(Ok(result) = std::process::Command::new("git")
+		.current_dir(&tempdir)
+		.arg("-c")
+		.arg("protocol.file.allow=always")
+		.arg("fetch")
+		.arg("--quiet")
+		.arg("origin")
+		.arg("+refs/remotes/origin/test-*:refs/heads/test-*")
+		.status()
+	);
+	assert!(result.success(), "git fetch: {result}");
+
+	let_assert!(Ok(result) = std::process::Command::new("git")
+		.current_dir(&tempdir)
+		.arg("switch")
+		.arg("--quiet")
+		.arg("test-root")
+		.status()
+	);
+	assert!(result.success(), "git fetch: {result}");
+
+	let_assert!(Ok(result) = std::process::Command::new("git")
+		.current_dir(&tempdir)
+		.arg("-c")
+		.arg("protocol.file.allow=always")
+		.arg("submodule")
+		.arg("--quiet")
+		.arg("update")
+		.arg("--init")
+		.status()
+	);
+	assert!(result.success(), "git fetch: {result}");
+
 	let_assert!(Ok(result) = std::process::Command::new("cargo")
 		.current_dir(&tempdir)
 		.arg("add")