find-git-cache.py: Fixing for both gcc and gdb.
find-git-cache.py: Fixing for both gcc and gdb.

timvideos/conda-hdmi2usb-packages,timvideos/conda-misoc-lm32,timvideos/conda-misoc-lm32,timvideos/conda-hdmi2usb-packages,litex-hub/litex-conda-compilers,litex-hub/litex-conda-prog,litex-hub/litex-conda-eda