SetAnimationClip on mecanim State using script

I have an AnimatorController and I'm trying to set the motions used on each of its states using an editor script. The issue is that I'm getting the clip animation from a model importer, and I can't find a way to use these as AnimationClip.

     UnityEditorInternal.AnimatorController ac =  AssetDatabase.LoadAssetAtPath(sourcePath, typeof(UnityEditorInternal.AnimatorController))as UnityEditorInternal.AnimatorController;
     
     UnityEditorInternal.StateMachine sm = ac.GetLayer(0).stateMachine;
     UnityEditorInternal.State state = sm.GetState(0);
     
     ModelImporter mi = AssetImporter.GetAtPath(fbxPath) as ModelImporter;
     ModelImporterClipAnimation[] clips = mi.clipAnimations;
     
     state.SetAnimationClip(clips[0]);

I get 2 errors: The best overloaded method match for UnityEditorInternal.State.SetAnimationClip(UnityEngine.AnimationClip)' has some invalid arguments Argument #1' cannot convert UnityEditor.ModelImporterClipAnimation' expression to type UnityEngine.AnimationClip'