diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a8eef5e66b1c9045ec0bc75c31f709cb1643c72..80820c6487c506c4a34d9241032a9fe04a8a3746 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -98,6 +98,13 @@ else(WIN32)
 endif(WIN32)
 
 find_package(Git REQUIRED)
+
+# config GIT_URL with github mirrors to speed up dependent repos clone
+option(GIT_URL "Git URL to clone dependent repos" ${GIT_URL})
+if(NOT GIT_URL)
+    set(GIT_URL "https://github.com")
+endif()
+
 find_package(Threads REQUIRED)
 
 include(simd)
diff --git a/cmake/external/brpc.cmake b/cmake/external/brpc.cmake
index ec42eaa759dbcd5b9e31ffdb07b56a9580282079..064e35112ff6f57eec8a03de176a3c2cbfa83011 100644
--- a/cmake/external/brpc.cmake
+++ b/cmake/external/brpc.cmake
@@ -40,7 +40,7 @@ ExternalProject_Add(
     extern_brpc
     ${EXTERNAL_PROJECT_LOG_ARGS}
     ${SHALLOW_CLONE}
-    GIT_REPOSITORY  "https://github.com/apache/incubator-brpc.git"
+    GIT_REPOSITORY  "${GIT_URL}/apache/incubator-brpc.git"
     GIT_TAG         "ad00fe940b4f05225b214131959293bbed8744a0" #rdma branch's head now.
     PREFIX          ${BRPC_SOURCES_DIR}
     UPDATE_COMMAND  ""
diff --git a/cmake/external/cryptopp.cmake b/cmake/external/cryptopp.cmake
index 351ef1c7c7aebb698a5d41689352a913d0b950e8..3176e2a665c634d97ee413485003071394c7dedf 100644
--- a/cmake/external/cryptopp.cmake
+++ b/cmake/external/cryptopp.cmake
@@ -17,7 +17,7 @@ INCLUDE(ExternalProject)
 SET(CRYPTOPP_PREFIX_DIR  ${THIRD_PARTY_PATH}/cryptopp)
 SET(CRYPTOPP_INSTALL_DIR ${THIRD_PARTY_PATH}/install/cryptopp)
 SET(CRYPTOPP_INCLUDE_DIR "${CRYPTOPP_INSTALL_DIR}/include" CACHE PATH "cryptopp include directory." FORCE)
-SET(CRYPTOPP_REPOSITORY https://github.com/weidai11/cryptopp.git)
+SET(CRYPTOPP_REPOSITORY ${GIT_URL}/weidai11/cryptopp.git)
 SET(CRYPTOPP_TAG        CRYPTOPP_8_2_0)
 
 IF(WIN32)
@@ -55,7 +55,7 @@ ExternalProject_Add(
     SOURCE_DIR      ${CRYPTOPP_SOURCE_DIR}
     PATCH_COMMAND
     COMMAND ${CMAKE_COMMAND} -E remove_directory "<SOURCE_DIR>/cmake/"
-    COMMAND git clone https://github.com/noloader/cryptopp-cmake "<SOURCE_DIR>/cmake"
+    COMMAND git clone ${GIT_URL}/noloader/cryptopp-cmake "<SOURCE_DIR>/cmake"
     COMMAND cd "<SOURCE_DIR>/cmake" && git checkout tags/${CRYPTOPP_TAG} -b ${CRYPTOPP_TAG}
     COMMAND ${CMAKE_COMMAND} -E copy_directory "<SOURCE_DIR>/cmake/" "<SOURCE_DIR>/"
     INSTALL_DIR     ${CRYPTOPP_INSTALL_DIR}
diff --git a/cmake/external/cub.cmake b/cmake/external/cub.cmake
index 6f790f1af8e1a03d1101244a4d82045331b44c13..a26568860f42dae5cdcce0b1bf51d06b531608c6 100644
--- a/cmake/external/cub.cmake
+++ b/cmake/external/cub.cmake
@@ -16,7 +16,7 @@ include(ExternalProject)
 
 set(CUB_PREFIX_DIR ${THIRD_PARTY_PATH}/cub)
 set(CUB_SOURCE_DIR ${THIRD_PARTY_PATH}/cub/src/extern_cub)
-set(CUB_REPOSITORY https://github.com/NVlabs/cub.git)
+set(CUB_REPOSITORY ${GIT_URL}/NVlabs/cub.git)
 set(CUB_TAG        1.8.0)
 
 cache_third_party(extern_cub
diff --git a/cmake/external/dlpack.cmake b/cmake/external/dlpack.cmake
index a5144f8e463d2d4dc06bfa6b5c5c360b34e1512a..87db181d953afb5bfb17d3167f1e5efac3353b79 100644
--- a/cmake/external/dlpack.cmake
+++ b/cmake/external/dlpack.cmake
@@ -17,7 +17,7 @@ include(ExternalProject)
 set(DLPACK_PREFIX_DIR ${THIRD_PARTY_PATH}/dlpack)
 set(DLPACK_SOURCE_DIR ${THIRD_PARTY_PATH}/dlpack/src/extern_dlpack)
 
-set(DLPACK_REPOSITORY https://github.com/dmlc/dlpack.git)
+set(DLPACK_REPOSITORY ${GIT_URL}/dmlc/dlpack.git)
 set(DLPACK_TAG        v0.2)
 
 cache_third_party(extern_dlpack
diff --git a/cmake/external/eigen.cmake b/cmake/external/eigen.cmake
index 631803da31d5a0fad1534d266f70f4708882f7e8..b1e389789102790a09e3c79d46debb552da48085 100644
--- a/cmake/external/eigen.cmake
+++ b/cmake/external/eigen.cmake
@@ -22,14 +22,14 @@ set(EIGEN_TAG        4da2c6b1974827b1999bab652a3d4703e1992d26)
 
 # the recent version of eigen will cause compilation error on windows
 if(WIN32)
-    set(EIGEN_REPOSITORY https://github.com/eigenteam/eigen-git-mirror.git)
+    set(EIGEN_REPOSITORY ${GIT_URL}/eigenteam/eigen-git-mirror.git)
     set(EIGEN_TAG        917060c364181f33a735dc023818d5a54f60e54c)
 endif()
 
 # eigen on cuda9.1 missing header of math_funtions.hpp
 # https://stackoverflow.com/questions/43113508/math-functions-hpp-not-found-when-using-cuda-with-eigen
 if(WITH_AMD_GPU)
-    set(EIGEN_REPOSITORY https://github.com/sabreshao/hipeigen.git)
+    set(EIGEN_REPOSITORY ${GIT_URL}/sabreshao/hipeigen.git)
     set(EIGEN_TAG        7cb2b6e5a4b4a1efe658abb215cd866c6fb2275e)
 endif()
 
diff --git a/cmake/external/gflags.cmake b/cmake/external/gflags.cmake
index 2842d73081b7b8c16340316c2e443a89ffa0aa37..a077c8061b1a235b68db8a9bc6d0a2bc8b28e57b 100644
--- a/cmake/external/gflags.cmake
+++ b/cmake/external/gflags.cmake
@@ -18,7 +18,7 @@ SET(GFLAGS_PREFIX_DIR  ${THIRD_PARTY_PATH}/gflags)
 SET(GFLAGS_SOURCE_DIR  ${THIRD_PARTY_PATH}/gflags/src/extern_gflags)
 SET(GFLAGS_INSTALL_DIR ${THIRD_PARTY_PATH}/install/gflags)
 SET(GFLAGS_INCLUDE_DIR "${GFLAGS_INSTALL_DIR}/include" CACHE PATH "gflags include directory." FORCE)
-set(GFLAGS_REPOSITORY https://github.com/gflags/gflags.git)
+set(GFLAGS_REPOSITORY ${GIT_URL}/gflags/gflags.git)
 set(GFLAGS_TAG        77592648e3f3be87d6c7123eb81cbad75f9aef5a)
 IF(WIN32)
   set(GFLAGS_LIBRARIES "${GFLAGS_INSTALL_DIR}/lib/gflags_static.lib" CACHE FILEPATH "GFLAGS_LIBRARIES" FORCE)
diff --git a/cmake/external/glog.cmake b/cmake/external/glog.cmake
index f66ecce18a0474f3f0be0662623b0d16da015bba..649152bd436361493189f422c0c1dc2381fe70a7 100644
--- a/cmake/external/glog.cmake
+++ b/cmake/external/glog.cmake
@@ -18,7 +18,7 @@ SET(GLOG_PREFIX_DIR  ${THIRD_PARTY_PATH}/glog)
 SET(GLOG_SOURCE_DIR  ${THIRD_PARTY_PATH}/glog/src/extern_glog)
 SET(GLOG_INSTALL_DIR ${THIRD_PARTY_PATH}/install/glog)
 SET(GLOG_INCLUDE_DIR "${GLOG_INSTALL_DIR}/include" CACHE PATH "glog include directory." FORCE)
-SET(GLOG_REPOSITORY https://github.com/google/glog.git)
+SET(GLOG_REPOSITORY ${GIT_URL}/google/glog.git)
 SET(GLOG_TAG        v0.3.5)
 
 IF(WIN32)
diff --git a/cmake/external/gloo.cmake b/cmake/external/gloo.cmake
index ace71a7f6341365574c9b0c777090016e25b9eaf..ea7af315e1a690578bd16c89cc83a158dacca4cf 100644
--- a/cmake/external/gloo.cmake
+++ b/cmake/external/gloo.cmake
@@ -21,7 +21,7 @@ SET(GLOO_INSTALL_DIR   ${THIRD_PARTY_PATH}/install/gloo)
 SET(GLOO_INCLUDE_DIR   "${GLOO_INSTALL_DIR}/include" CACHE PATH "gloo include directory." FORCE)
 SET(GLOO_LIBRARY_DIR   "${GLOO_INSTALL_DIR}/lib" CACHE PATH "gloo library directory." FORCE)
 # As we add extra features for gloo, we use the non-official repo
-SET(GLOO_REPOSITORY    https://github.com/sandyhouse/gloo.git)
+SET(GLOO_REPOSITORY    ${GIT_URL}/sandyhouse/gloo.git)
 SET(GLOO_TAG           v0.0.2)
 SET(GLOO_LIBRARIES     "${GLOO_INSTALL_DIR}/lib/libgloo.a" CACHE FILEPATH "gloo library." FORCE)
 
diff --git a/cmake/external/gtest.cmake b/cmake/external/gtest.cmake
index 60061c44b78eb20b00444f5718dbc4bc8d564669..3db12f084eb5a3519e529afe90a151b33823fe82 100644
--- a/cmake/external/gtest.cmake
+++ b/cmake/external/gtest.cmake
@@ -25,7 +25,7 @@ SET(GTEST_PREFIX_DIR    ${THIRD_PARTY_PATH}/gtest)
 SET(GTEST_SOURCE_DIR    ${THIRD_PARTY_PATH}/gtest/src/extern_gtest)
 SET(GTEST_INSTALL_DIR   ${THIRD_PARTY_PATH}/install/gtest)
 SET(GTEST_INCLUDE_DIR   "${GTEST_INSTALL_DIR}/include" CACHE PATH "gtest include directory." FORCE)
-set(GTEST_REPOSITORY     https://github.com/google/googletest.git)
+set(GTEST_REPOSITORY     ${GIT_URL}/google/googletest.git)
 set(GTEST_TAG            release-1.8.1)
 
 INCLUDE_DIRECTORIES(${GTEST_INCLUDE_DIR})
diff --git a/cmake/external/leveldb.cmake b/cmake/external/leveldb.cmake
index 384268a2d814cf083ce1104eb0349c23b1637d6d..be6d70c82629b4eafeca1bc4f92766584ccd42e3 100644
--- a/cmake/external/leveldb.cmake
+++ b/cmake/external/leveldb.cmake
@@ -25,7 +25,7 @@ ExternalProject_Add(
     ${EXTERNAL_PROJECT_LOG_ARGS}
     ${SHALLOW_CLONE}
     PREFIX ${LEVELDB_SOURCES_DIR}
-    GIT_REPOSITORY "https://github.com/google/leveldb.git"
+    GIT_REPOSITORY "${GIT_URL}/google/leveldb.git"
     GIT_TAG v1.18
     CONFIGURE_COMMAND ""
     BUILD_COMMAND CXXFLAGS=-fPIC make -j ${NUM_OF_PROCESSOR} libleveldb.a
diff --git a/cmake/external/libxsmm.cmake b/cmake/external/libxsmm.cmake
index b6ab2d1528447b03af5ec6bc6291ce48cb9fac13..0d09576286d907ec6964df69efb0efcf9885f57d 100644
--- a/cmake/external/libxsmm.cmake
+++ b/cmake/external/libxsmm.cmake
@@ -24,7 +24,7 @@ SET(LIBXSMM_LIBS        "${LIBXSMM_LIBRARY_DIR}/libxsmm.a"
 ExternalProject_Add(
     extern_libxsmm
     ${SHALLOW_CLONE}
-    GIT_REPOSITORY  "https://github.com/hfp/libxsmm.git"
+    GIT_REPOSITORY  "${GIT_URL}/hfp/libxsmm.git"
     GIT_TAG         "7cc03b5b342fdbc6b6d990b190671c5dbb8489a2"
     PREFIX          ${LIBXSMM_SOURCES_DIR}
     UPDATE_COMMAND  ""
diff --git a/cmake/external/lite.cmake b/cmake/external/lite.cmake
index 9781d339666794c02200a2b8c06bc4850d6c7f67..9cf305a4421d84554141ae525645ebe8d32047aa 100644
--- a/cmake/external/lite.cmake
+++ b/cmake/external/lite.cmake
@@ -62,7 +62,7 @@ if (NOT LITE_SOURCE_DIR OR NOT LITE_BINARY_DIR)
     ExternalProject_Add(
       ${LITE_PROJECT}
       ${EXTERNAL_PROJECT_LOG_ARGS}
-      GIT_REPOSITORY      "https://github.com/PaddlePaddle/Paddle-Lite.git"
+      GIT_REPOSITORY      "${GIT_URL}/PaddlePaddle/Paddle-Lite.git"
       GIT_TAG             ${LITE_GIT_TAG}
       PREFIX              ${LITE_SOURCES_DIR}
       PATCH_COMMAND       mkdir -p ${LITE_SOURCES_DIR}/src/extern_lite-build/lite/gen_code && touch ${LITE_SOURCES_DIR}/src/extern_lite-build/lite/gen_code/__generated_code__.cc
@@ -106,7 +106,7 @@ if (NOT LITE_SOURCE_DIR OR NOT LITE_BINARY_DIR)
     ExternalProject_Add(
         ${LITE_PROJECT}
         ${EXTERNAL_PROJECT_LOG_ARGS}
-        GIT_REPOSITORY      "https://github.com/PaddlePaddle/Paddle-Lite.git"
+        GIT_REPOSITORY      "${GIT_URL}/PaddlePaddle/Paddle-Lite.git"
         GIT_TAG             ${LITE_GIT_TAG}
         PREFIX              ${LITE_SOURCES_DIR}
         UPDATE_COMMAND      ""
diff --git a/cmake/external/mkldnn.cmake b/cmake/external/mkldnn.cmake
index e3ac8624a809ab9c0821855bcd4ab1b2a162435f..9c9e1d18d90d6333b225e0b99e5d652c5c13d84a 100644
--- a/cmake/external/mkldnn.cmake
+++ b/cmake/external/mkldnn.cmake
@@ -19,7 +19,7 @@ SET(MKLDNN_PREFIX_DIR     ${THIRD_PARTY_PATH}/mkldnn)
 SET(MKLDNN_SOURCE_DIR     ${THIRD_PARTY_PATH}/mkldnn/src/extern_mkldnn)
 SET(MKLDNN_INSTALL_DIR    ${THIRD_PARTY_PATH}/install/mkldnn)
 SET(MKLDNN_INC_DIR        "${MKLDNN_INSTALL_DIR}/include" CACHE PATH "mkldnn include directory." FORCE)
-SET(MKLDNN_REPOSITORY     https://github.com/oneapi-src/oneDNN.git)
+SET(MKLDNN_REPOSITORY     ${GIT_URL}/oneapi-src/oneDNN.git)
 SET(MKLDNN_TAG            361725600224f41b7347a1c6bee9b04d1e6c14d7)
 
 # Introduce variables:
diff --git a/cmake/external/openblas.cmake b/cmake/external/openblas.cmake
index 5bc7eaaff3abe65e1a12a923880960bbb4268f87..5e67a91c3d85486a3f2069d662e9373ced77a50a 100644
--- a/cmake/external/openblas.cmake
+++ b/cmake/external/openblas.cmake
@@ -17,7 +17,7 @@ INCLUDE(ExternalProject)
 SET(CBLAS_PREFIX_DIR  ${THIRD_PARTY_PATH}/openblas)
 SET(CBLAS_SOURCE_DIR  ${THIRD_PARTY_PATH}/openblas/src/extern_openblas)
 SET(CBLAS_INSTALL_DIR ${THIRD_PARTY_PATH}/install/openblas)
-SET(CBLAS_REPOSITORY  https://github.com/xianyi/OpenBLAS.git)
+SET(CBLAS_REPOSITORY  ${GIT_URL}/xianyi/OpenBLAS.git)
 SET(CBLAS_TAG         v0.3.7)
 IF(WITH_ARM)
     # Under the FT2000 architecture, the calculation result of blas.sgemm in openblas 0.3+ is wrong,
diff --git a/cmake/external/protobuf.cmake b/cmake/external/protobuf.cmake
index 82dd4fa2e8eae9ce6dbafa5f2d4acf47ce7ecd9f..905c17b9304ae7d8e2d7bb4b059ff7208511ec16 100644
--- a/cmake/external/protobuf.cmake
+++ b/cmake/external/protobuf.cmake
@@ -198,7 +198,7 @@ FUNCTION(build_protobuf TARGET_NAME BUILD_FOR_HOST)
             "-Dprotobuf_MSVC_STATIC_RUNTIME=${MSVC_STATIC_CRT}")
     ENDIF()
 
-    SET(PROTOBUF_REPOSITORY  https://github.com/protocolbuffers/protobuf.git)
+    SET(PROTOBUF_REPOSITORY  ${GIT_URL}/protocolbuffers/protobuf.git)
     SET(PROTOBUF_TAG         9f75c5aa851cd877fb0d93ccc31b8567a6706546)
 
     cache_third_party(${TARGET_NAME}
diff --git a/cmake/external/pybind11.cmake b/cmake/external/pybind11.cmake
index 1297d613839caa9c730b9e4e6a9281d907f119b5..3a0b3676db36e3243fb82d144bb151393504ee45 100644
--- a/cmake/external/pybind11.cmake
+++ b/cmake/external/pybind11.cmake
@@ -16,7 +16,7 @@ include(ExternalProject)
 
 set(PYBIND_PREFIX_DIR     ${THIRD_PARTY_PATH}/pybind)
 set(PYBIND_SOURCE_DIR     ${THIRD_PARTY_PATH}/pybind/src/extern_pybind)
-SET(PYBIND_REPOSITORY     https://github.com/pybind/pybind11.git)
+SET(PYBIND_REPOSITORY     ${GIT_URL}/pybind/pybind11.git)
 SET(PYBIND_TAG            v2.2.4)
 
 cache_third_party(extern_pybind
diff --git a/cmake/external/rocprim.cmake b/cmake/external/rocprim.cmake
index 7cb765039714e5d665d594056f2335a765fa3314..6bcecb88e9886da7335e169d4357e2dfc0e67ff6 100644
--- a/cmake/external/rocprim.cmake
+++ b/cmake/external/rocprim.cmake
@@ -29,7 +29,7 @@ SET(ROCPRIM_INCLUDE_DIR ${ROCPRIM_INSTALL_DIR}/include)
 ExternalProject_Add(
     extern_rocprim
     ${SHALLOW_CLONE}
-    GIT_REPOSITORY "https://github.com/ROCmSoftwarePlatform/rocPRIM.git"
+    GIT_REPOSITORY "${GIT_URL}/ROCmSoftwarePlatform/rocPRIM.git"
     GIT_TAG        5bd41b96ab8d8343330fb2c3e1b96775bde3b3fc 
     PREFIX         ${ROCPRIM_SOURCE_DIR}
     UPDATE_COMMAND  ""
diff --git a/cmake/external/threadpool.cmake b/cmake/external/threadpool.cmake
index 24827b5bdf954785005adb106f0a5fca6b2694c8..205e8d26d93ca1c25e5b59ecc3b063b4837db77b 100644
--- a/cmake/external/threadpool.cmake
+++ b/cmake/external/threadpool.cmake
@@ -16,7 +16,7 @@ INCLUDE(ExternalProject)
 
 SET(THREADPOOL_PREFIX_DIR ${THIRD_PARTY_PATH}/threadpool)
 SET(THREADPOOL_SOURCE_DIR ${THIRD_PARTY_PATH}/threadpool/src/extern_threadpool)
-SET(THREADPOOL_REPOSITORY https://github.com/progschj/ThreadPool.git)
+SET(THREADPOOL_REPOSITORY ${GIT_URL}/progschj/ThreadPool.git)
 SET(THREADPOOL_TAG        9a42ec1329f259a5f4881a291db1dcb8f2ad9040)
 
 cache_third_party(extern_threadpool
diff --git a/cmake/external/warpctc.cmake b/cmake/external/warpctc.cmake
index 7f2ab1fb11d847217a2294e4122904d5bada18fb..0ee3e2116a94b68d528a475a453d1c31f0464cf4 100644
--- a/cmake/external/warpctc.cmake
+++ b/cmake/external/warpctc.cmake
@@ -17,7 +17,7 @@ INCLUDE(ExternalProject)
 SET(WARPCTC_PREFIX_DIR  ${THIRD_PARTY_PATH}/warpctc)
 SET(WARPCTC_SOURCE_DIR  ${THIRD_PARTY_PATH}/warpctc/src/extern_warpctc)
 SET(WARPCTC_INSTALL_DIR ${THIRD_PARTY_PATH}/install/warpctc)
-set(WARPCTC_REPOSITORY  https://github.com/baidu-research/warp-ctc.git)
+set(WARPCTC_REPOSITORY  ${GIT_URL}/baidu-research/warp-ctc.git)
 set(WARPCTC_TAG         95a461eddeabd51099ef059dcfada1117eb1bfb8)
 
 SET(WARPCTC_INCLUDE_DIR "${WARPCTC_INSTALL_DIR}/include"
diff --git a/cmake/external/xbyak.cmake b/cmake/external/xbyak.cmake
index f990914ab73a6877e529c1bde5da6c1079bb0555..6627c4eed112f2eead20fc5831b190488406b8f3 100644
--- a/cmake/external/xbyak.cmake
+++ b/cmake/external/xbyak.cmake
@@ -19,7 +19,7 @@ set(XBYAK_PREFIX_DIR    ${THIRD_PARTY_PATH}/xbyak)
 SET(XBYAK_SOURCE_DIR     ${THIRD_PARTY_PATH}/xbyak/src/extern_xbyak)
 set(XBYAK_INSTALL_ROOT  ${THIRD_PARTY_PATH}/install/xbyak)
 set(XBYAK_INC_DIR       ${XBYAK_INSTALL_ROOT}/include)
-set(XBYAK_REPOSITORY    https://github.com/herumi/xbyak.git)
+set(XBYAK_REPOSITORY    ${GIT_URL}/herumi/xbyak.git)
 set(XBYAK_TAG           v5.661) # Jul 26th
 
 include_directories(${XBYAK_INC_DIR})
diff --git a/cmake/external/xxhash.cmake b/cmake/external/xxhash.cmake
index 3be938141f7e89ace533ddd505be81220db4d28f..bdd7df190ff106178266fbd47716e7d70fd229bd 100644
--- a/cmake/external/xxhash.cmake
+++ b/cmake/external/xxhash.cmake
@@ -18,7 +18,7 @@ set(XXHASH_PREFIX_DIR ${THIRD_PARTY_PATH}/xxhash)
 set(XXHASH_SOURCE_DIR ${THIRD_PARTY_PATH}/xxhash/src/extern_xxhash)
 set(XXHASH_INSTALL_DIR ${THIRD_PARTY_PATH}/install/xxhash)
 set(XXHASH_INCLUDE_DIR "${XXHASH_INSTALL_DIR}/include")
-set(XXHASH_REPOSITORY  https://github.com/Cyan4973/xxHash.git)
+set(XXHASH_REPOSITORY  ${GIT_URL}/Cyan4973/xxHash.git)
 set(XXHASH_TAG         v0.6.5)
 
 cache_third_party(extern_xxhash
diff --git a/cmake/external/zlib.cmake b/cmake/external/zlib.cmake
index 2f2a6b74701150691109c361ff83c4d2d373bb8d..4464787a0c2a64066585e8f308c68a62286478e9 100644
--- a/cmake/external/zlib.cmake
+++ b/cmake/external/zlib.cmake
@@ -19,7 +19,7 @@ SET(ZLIB_SOURCE_DIR ${THIRD_PARTY_PATH}/zlib/src/extern_zlib)
 SET(ZLIB_INSTALL_DIR ${THIRD_PARTY_PATH}/install/zlib)
 SET(ZLIB_ROOT ${ZLIB_INSTALL_DIR} CACHE FILEPATH "zlib root directory." FORCE)
 SET(ZLIB_INCLUDE_DIR "${ZLIB_INSTALL_DIR}/include" CACHE PATH "zlib include directory." FORCE)
-set(ZLIB_REPOSITORY https://github.com/madler/zlib.git)
+set(ZLIB_REPOSITORY ${GIT_URL}/madler/zlib.git)
 set(ZLIB_TAG        v1.2.8)
 
 INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR}) # For zlib code to include its own headers.