```cmake
# Contact: Simon Rit <simon.rit@creatis.insa-lyon.fr>
itk_fetch_module(RTK
    "Reconstruction Toolkit (RTK) http://www.openrtk.org/"
  GIT_REPOSITORY ${git_protocol}://github.com/SimonRit/RTK.git
  GIT_TAG 3fc00efadef8324aba31f77390c3e562f9af5147
)
```

Update RTK for future proofing.
user
```cmake
# Contact: Simon Rit <simon.rit@creatis.insa-lyon.fr>
itk_fetch_module(RTK
    "Reconstruction Toolkit (RTK) http://www.openrtk.org/"
  GIT_REPOSITORY ${git_protocol}://github.com/SimonRit/RTK.git
  GIT_TAG f0451dafae314c142d2ead540b8fde5f1f8a51d8
)
```
assistant