Fixes problems with fetching LFS objects during nvImageCodec conda build

- conda does bare mirror first and then clones the code to the build dir
  it also fetches the LFS object, but it does that only for the built reference, if there are
  other objects they are left out. Then it does the full cone and checkout and that is why it
  complains about missing objects. Also, it doesn't allow running any post-clone hooks.
  see conda/conda-build#1462

Signed-off-by: Janusz Lisiecki <jlisiecki@nvidia.com>

conda/build_conda_packages.sh

@@ -61,7 +61,16 @@ conda mambabuild ${CONDA_BUILD_OPTIONS} third_party/dali_opencv/recipe
 conda mambabuild ${CONDA_BUILD_OPTIONS} third_party/dali_ffmpeg/recipe
 
 # Build nvimagecodec
+# conda does bare mirror first and then clones the code to the build dir
+# it also fetches the LFS object, but it does that only for the built reference, if there are
+# other objects they are left out. Then it does the full cone and checkout and that is why it
+# complains about missing objects. Also, it doesn't allow running any post-clone hooks.
+# see https://github.com/conda/conda-build/issues/1462
+export GIT_LFS_SKIP_SMUDGE=1
+export GIT_CLONE_PROTECTION_ACTIVE=false
 conda mambabuild ${CONDA_BUILD_OPTIONS} third_party/dali_nvimagecodec/recipe
+export GIT_LFS_SKIP_SMUDGE=0
+export GIT_CLONE_PROTECTION_ACTIVE=true
 
 # Building DALI core package
 conda mambabuild ${CONDA_BUILD_OPTIONS} dali_native_libs/recipe