freecad@0.21.2_py310: building using the --HEAD flag requires manual deletion of prior build directory

[ipatch]

using the below command to install freecad will fail on subsequent rebuilds.

brew install freecad/freecad/freecad --HEAD

error messages,

CMake Error: The source "/Volumes/STORAGE/ipatch/homebrew/tmp/freecadA0.21.2_py310-20240719-95443-gc4e7e/CMakeLists.txt" does not match the source "/Volumes/STORAGE/ipatch/homebrew/tmp/freecadA0.21.2_py310-20240716-34765-m2nw5n/CMakeLists.txt" used to generate cache.  Re-run cmake with a different source directory.
-- Cache values

and

Error: freecad/freecad/freecad@0.21.2_py310 HEAD-51789ae did not build
Logs:
     /Users/ipatch/Library/Logs/Homebrew/freecad@0.21.2_py310/00.options.out
     /Users/ipatch/Library/Logs/Homebrew/freecad@0.21.2_py310/01.cmake
     /Users/ipatch/Library/Logs/Homebrew/freecad@0.21.2_py310/CMakeCache.txt
     /Users/ipatch/Library/Logs/Homebrew/freecad@0.21.2_py310/_deps
Do not report this issue to Homebrew/brew or Homebrew/homebrew-core!

Do not report this issue: you are running in an unsupported configuration.

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not entirely sure if this error is related to my particular homebrew setup. i do have the below environment variables setup specific for my homebrew installation on this particular box,

HOMEBREW_TEMP=/Volumes/STORAGE/ipatch/homebrew/tmp
HOMEBREW_CACHE=/Volumes/STORAGE/ipatch/homebrew/cache

the current workaround is to remove the offending folder / directory. ie.

rm -rf /Volumes/STORAGE/ipatch/homebrew/tmp/build