Error in building Slicer from source about ITK

Hi, all,

I ran the build in my ubuntu 18, with gcc/g++ 7.4 and cmake 3.13 and qt5. But it seems to me the path for ITK git repository is not correct. Anyone ran into this issue? How should I provide correct path for ITK build?
fatal: not a git repository (or any of the parent directories): .git
CMake Error at /home/me/MyProjects/Slicer-SuperBuild-Debug/ITK-prefix/tmp/ITK-gitupdate.cmake:13 (message):
Failed to get the hash for HEAD

Hmm, that’s an odd error, maybe a network glitch. Probably deleting the build tree and starting from scratch will work. If this is repeatable, then try checking out ITK manually and report back with full logs.