```cmake
itk_fetch_module(MGHIO
  "MGHIO ImageIO plugin for ITK"
  GIT_REPOSITORY https://github.com/Slicer/itkMGHImageIO.git
  GIT_TAG 841832fd94889d0793b606c0a5b9be981b98cec3
  )
```

Fix cmake warnings on EXCLUDE_FROM_ALL.
user
```cmake
itk_fetch_module(MGHIO
  "MGHIO ImageIO plugin for ITK"
  GIT_REPOSITORY https://github.com/Slicer/itkMGHImageIO.git
  GIT_TAG 1beeaa5abb18188ded17bf6337b31c572d2594cf
  )
```
assistant