diff --git a/deps/deps-unix-common.cmake b/deps/deps-unix-common.cmake
index 74582f601..944d2c06d 100644
--- a/deps/deps-unix-common.cmake
+++ b/deps/deps-unix-common.cmake
@@ -61,8 +61,8 @@ ExternalProject_Add(dep_qhull
         -DBUILD_SHARED_LIBS=OFF
         -DCMAKE_INSTALL_PREFIX=${DESTDIR}/usr/local
         ${DEP_CMAKE_OPTS}
-    UPDATE_COMMAND ""
-    PATCH_COMMAND patch -p1 < ${CMAKE_CURRENT_SOURCE_DIR}/qhull-mods.patch
+    PATCH_COMMAND       ${GIT_EXECUTABLE} checkout -f -- . && git clean -df && 
+                        ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/qhull-mods.patch
 )
 
 ExternalProject_Add(dep_blosc
@@ -80,8 +80,8 @@ ExternalProject_Add(dep_blosc
         -DBUILD_TESTS=OFF 
         -DBUILD_BENCHMARKS=OFF 
         -DPREFER_EXTERNAL_ZLIB=ON
-    UPDATE_COMMAND ""
-    PATCH_COMMAND ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/blosc-mods.patch
+    PATCH_COMMAND       ${GIT_EXECUTABLE} checkout -f -- . && git clean -df && 
+                        ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/blosc-mods.patch
 )
 
 ExternalProject_Add(dep_openexr
@@ -96,7 +96,6 @@ ExternalProject_Add(dep_openexr
         -DPYILMBASE_ENABLE:BOOL=OFF 
         -DOPENEXR_VIEWERS_ENABLE:BOOL=OFF
         -DOPENEXR_BUILD_UTILS:BOOL=OFF
-    UPDATE_COMMAND ""
 )
 
 ExternalProject_Add(dep_openvdb
@@ -116,6 +115,6 @@ ExternalProject_Add(dep_openvdb
         -DOPENVDB_CORE_STATIC=ON 
         -DTBB_STATIC=ON
         -DOPENVDB_BUILD_VDB_PRINT=ON
-    UPDATE_COMMAND ""
-    PATCH_COMMAND ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/openvdb-mods.patch
+    PATCH_COMMAND PATCH_COMMAND     ${GIT_EXECUTABLE} checkout -f -- . && git clean -df && 
+                                    ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/openvdb-mods.patch
 )
\ No newline at end of file
diff --git a/deps/deps-windows.cmake b/deps/deps-windows.cmake
index 4aae07d4a..3affbaefa 100644
--- a/deps/deps-windows.cmake
+++ b/deps/deps-windows.cmake
@@ -226,7 +226,8 @@ ExternalProject_Add(dep_qhull
         -DBUILD_SHARED_LIBS=OFF
         -DCMAKE_POSITION_INDEPENDENT_CODE=ON
         -DCMAKE_DEBUG_POSTFIX=d
-    UPDATE_COMMAND ""
+    PATCH_COMMAND PATCH_COMMAND     ${GIT_EXECUTABLE} checkout -f -- . && git clean -df && 
+                                    ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/qhull-mods.patch
     BUILD_COMMAND msbuild /m /P:Configuration=Release INSTALL.vcxproj
     INSTALL_COMMAND ""
 )
@@ -287,8 +288,8 @@ ExternalProject_Add(dep_blosc
         -DPREFER_EXTERNAL_ZLIB=ON
         -DBLOSC_IS_SUBPROJECT:BOOL=ON
         -DBLOSC_INSTALL:BOOL=ON
-    UPDATE_COMMAND ""
-    PATCH_COMMAND ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/blosc-mods.patch
+    PATCH_COMMAND       ${GIT_EXECUTABLE} checkout -f -- . && git clean -df && 
+                        ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/blosc-mods.patch
     BUILD_COMMAND msbuild /m /P:Configuration=Release INSTALL.vcxproj
     INSTALL_COMMAND ""
 )
@@ -339,8 +340,8 @@ ExternalProject_Add(dep_openvdb
         -DTBB_STATIC=ON
         -DOPENVDB_BUILD_VDB_PRINT=ON
     BUILD_COMMAND msbuild /m /P:Configuration=Release INSTALL.vcxproj
-    UPDATE_COMMAND ""
-    PATCH_COMMAND ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/openvdb-mods.patch
+    PATCH_COMMAND       ${GIT_EXECUTABLE} checkout -f -- . && git clean -df && 
+                        ${GIT_EXECUTABLE} apply --whitespace=fix ${CMAKE_CURRENT_SOURCE_DIR}/openvdb-mods.patch
     INSTALL_COMMAND ""
 )