How to reproduce:
1. Create a new Universal 3D Project
2. Open Package Manager (Window -> Package Manager)
3. Click the "+" icon
4. Click "Install package from git URL" button
5. Type "com.unity.entities@1.3.0-pre.4" and click enter
6. Observe the Console after the package is installed

Expected result: No Errors or warnings are thrown
Actual result: Warning: "The following asset(s) located in immutable packages were unexpectedly altered. Making changes to immutable packages isn't recommended because the changes can be lost without any warning during Package Manager operations. Packages/com.unity.entities/Unity.Scenes.Hybrid.Tests/Test.mat Packages/com.unity.entities/Unity.Scenes.Editor.Tests/Assets/TestMaterial.mat"

Reproducible with: 1.3.0-pre.4 (6000.0.12f1)

Reproduced on: macOS Sonoma 14.5 (M1), Windows 11