Index: cmake/modules/ProtobufMutator.cmake
===================================================================
--- cmake/modules/ProtobufMutator.cmake
+++ cmake/modules/ProtobufMutator.cmake
@@ -2,12 +2,14 @@
 set(PBM_PATH ${CMAKE_CURRENT_BINARY_DIR}/${PBM_PREFIX}/src/${PBM_PREFIX})
 set(PBM_LIB_PATH ${PBM_PATH}-build/src/libprotobuf-mutator.a)
 set(PBM_FUZZ_LIB_PATH ${PBM_PATH}-build/src/libfuzzer/libprotobuf-mutator-libfuzzer.a)
+set(CMAKE_MODULE_PATH "${PB_PATH};${CMAKE_MODULE_PATH}")
 
 ExternalProject_Add(${PBM_PREFIX}
   PREFIX ${PBM_PREFIX}
-  GIT_REPOSITORY https://github.com/google/libprotobuf-mutator.git
+  GIT_REPOSITORY ${PBM_REPO}
   GIT_TAG master
   CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+             -DCMAKE_PREFIX_PATH=${PBM_FUZZ_PATH}
   CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
                    -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
   BUILD_BYPRODUCTS ${PBM_LIB_PATH} ${PBM_FUZZ_LIB_PATH}