DONT MERGE

cmake/CDeps.cmake

@@ -72,12 +72,36 @@ function(cdeps_download_package NAME URL REF)
     endif()
   endif()
 
+  message(STATUS "CDeps: Downloading ${NAME} from ${GIT_URL} at ${REF}")
+
+  execute_process(
+    COMMAND "${GIT_EXECUTABLE}" clone --no-checkout --depth 1
+      https://${URL}.git ${CDEPS_DIR}/${NAME}/src
+    ERROR_VARIABLE ERR
+    RESULT_VARIABLE RES
+    OUTPUT_QUIET)
+  if(NOT "${RES}" EQUAL 0)
+    file(REMOVE_RECURSE ${CDEPS_DIR}/${NAME}/src)
+    message(FATAL_ERROR "CDeps: Failed to clone ${GIT_URL}: ${ERR}")
+    return()
+  endif()
+
+  execute_process(
+    COMMAND "${GIT_EXECUTABLE}" fetch --depth 1 origin "${REF}"
+    ERROR_VARIABLE ERR
+    RESULT_VARIABLE RES
+    OUTPUT_QUIET)
+  if(NOT "${RES}" EQUAL 0)
+    file(REMOVE_RECURSE ${CDEPS_DIR}/${NAME}/src)
+    message(FATAL_ERROR "CDeps: Failed to fetch "${REF}" from ${GIT_URL}: ${ERR}")
+    return()
+  endif()
+
   set(CLONE_OPTS -b "${REF}" --depth 1)
   if(ARG_RECURSE_SUBMODULES)
     list(APPEND CLONE_OPTS --recurse-submodules)
   endif()
 
-  message(STATUS "CDeps: Downloading ${NAME} from ${GIT_URL} at ${REF}")
   execute_process(
     COMMAND "${GIT_EXECUTABLE}" clone ${CLONE_OPTS} https://${URL}.git
       ${CDEPS_DIR}/${NAME}/src