origin patch from nixos.
see: https://raw.githubusercontent.com/NixOS/nixpkgs/d916df777523d75f7c5acca79946652f032f633e/pkgs/by-name/ct/ctune/cmake_disable_git_clone.patch

diff --git a/CMakeLists.txt.orig b/CMakeLists.txt
index ac0488e..a3724bc 100644
--- a/CMakeLists.txt.orig
+++ b/CMakeLists.txt
@@ -50,14 +50,6 @@ include(FetchContent)
 
 set(CMAKE_VERBOSE_MAKEFILE ON)
 
-#========================================== PRE-CHECKS ============================================#
-include(FindGit)
-find_package(Git)
-
-if (NOT Git_FOUND)
-    message(FATAL_ERROR "Required package 'Git' not found on system.")
-endif ()
-
 #======================================== LIB IMPORTS =============================================#
 # ======= #
 # OpenSSL #
@@ -65,40 +57,17 @@ endif ()
 find_package(OpenSSL REQUIRED)
 include_directories(${OPENSSL_INCLUDE_DIR})
 
-# ============== #
-# JSON-C library #
-# ============== #
-set(JSONC_DOWNLOAD_PATH "${TEMP_DIR_PATH}/libjsonc")
-set(JSONC_INSTALL_PATH "${CMAKE_EXTERNAL_OUTPUT_DIRECTORY}")
-
-add_custom_target(make-jsonc-install-dir ALL
-        COMMAND ${CMAKE_COMMAND} -E make_directory ${JSONC_INSTALL_PATH}
-)
-
-ExternalProject_Add(libjsonc
-        PREFIX         "${JSONC_DOWNLOAD_PATH}"
-        SOURCE_DIR     "${JSONC_DOWNLOAD_PATH}/src/libjsonc-build"
-        GIT_REPOSITORY "https://github.com/json-c/json-c.git"
-        GIT_TAG        "json-c-0.18-20240915"
-        CMAKE_ARGS     "-DBUILD_STATIC_LIBS=ON"
-                       "-DBUILD_SHARED_LIBS=OFF"
-                       "-DCMAKE_INSTALL_PREFIX:PATH=${JSONC_INSTALL_PATH}"
-                       "-DHAVE_ARC4RANDOM=OFF"
-                       "-DCMAKE_BUILD_TYPE=release"
-                       "-DCMAKE_POLICY_VERSION_MINIMUM=3.5"
-)
-
-set(JSONC_LIBRARIES
-        ${CMAKE_EXTERNAL_OUTPUT_DIRECTORY}/lib/libjson-c.a
-#        bsd
-)
-
 # ============ #
 # Curl library #
 # ============ #
 find_package(CURL REQUIRED)
 include_directories(${CURL_INCLUDE_DIR})
 
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(JSONC REQUIRED json-c)
+include_directories(${JSONC_INCLUDE_DIRS})
+
+
 # ================================ #
 # nCurses - for the user interface #
 # ================================ #
@@ -410,7 +379,7 @@ add_subdirectory(docs)
 #endforeach()
 
 add_executable(ctune ${SOURCE_FILES})
-add_dependencies(ctune ctune_logger libjsonc)
+add_dependencies(ctune ctune_logger)
 include_directories(${CMAKE_EXTERNAL_OUTPUT_DIRECTORY}/include)
 
 add_dependencies(ctune ${CTUNE_PLUGIN_LIST_AUDIO_PLAYER})
@@ -450,4 +419,4 @@ if(TARGET uninstall)
 
     add_custom_target(uninstall
             COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/CMakeUninstall.cmake)
-endif()
\ No newline at end of file
+endif()