diff --git a/base/thirdparty/dropbear/CMakeLists.txt b/base/thirdparty/dropbear/CMakeLists.txt
index 51fca147..7f593ecd 100644
--- a/base/thirdparty/dropbear/CMakeLists.txt
+++ b/base/thirdparty/dropbear/CMakeLists.txt
@@ -43,7 +43,7 @@ include(ExternalProject)
 set(DROPBEAR_VER "2018.76")
 ExternalProject_Add(
     ${PROJECT_NAME}
-    URL http://deb.debian.org/debian/pool/main/d/dropbear/dropbear_${DROPBEAR_VER}.orig.tar.bz2
+    URL file://@dropbear@
     URL_MD5 c3912f7fcdcc57c99937e4a79480d2c2
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
     PATCH_COMMAND COMMAND ${PATCH_CMD1} COMMAND ${PATCH_CMD2} COMMAND
diff --git a/base/thirdparty/gettext/CMakeLists.txt b/base/thirdparty/gettext/CMakeLists.txt
index 0ba8c635..c1bc122c 100644
--- a/base/thirdparty/gettext/CMakeLists.txt
+++ b/base/thirdparty/gettext/CMakeLists.txt
@@ -38,7 +38,7 @@ set(GETTEXT_VER "0.21")
 include(ExternalProject)
 ExternalProject_Add(
     ${PROJECT_NAME}
-    URL http://ftpmirror.gnu.org/gettext/gettext-${GETTEXT_VER}.tar.gz
+    URL file://@gettext@
     URL_MD5 28b1cd4c94a74428723ed966c38cf479
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
     PATCH_COMMAND COMMAND ${PATCH_CMD}
diff --git a/base/thirdparty/libffi/CMakeLists.txt b/base/thirdparty/libffi/CMakeLists.txt
index 972c991b..4409b18a 100644
--- a/base/thirdparty/libffi/CMakeLists.txt
+++ b/base/thirdparty/libffi/CMakeLists.txt
@@ -24,7 +24,7 @@ set(LIBFFI_VER "3.4.4")
 ExternalProject_Add(
     ${PROJECT_NAME}
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
-    URL https://github.com/libffi/libffi/releases/download/v${LIBFFI_VER}/libffi-${LIBFFI_VER}.tar.gz
+    URL file://@libffi@
     URL_MD5 0da1a5ed7786ac12dcbaf0d499d8a049
     CONFIGURE_COMMAND ${CFG_CMD}
     # skip the rest, we only need the header for glib
diff --git a/base/thirdparty/libiconv/CMakeLists.txt b/base/thirdparty/libiconv/CMakeLists.txt
index 6a45ddc7..c8cf2974 100644
--- a/base/thirdparty/libiconv/CMakeLists.txt
+++ b/base/thirdparty/libiconv/CMakeLists.txt
@@ -19,7 +19,7 @@ set(GETTEXT_VER "1.15")
 include(ExternalProject)
 ExternalProject_Add(
     libiconv
-    URL http://ftpmirror.gnu.org/libiconv/libiconv-${GETTEXT_VER}.tar.gz
+    URL file://@libiconv@
     URL_MD5 ace8b5f2db42f7b3b3057585e80d9808
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
     CONFIGURE_COMMAND ${CFG_CMD}
diff --git a/base/thirdparty/lpeg/CMakeLists.txt b/base/thirdparty/lpeg/CMakeLists.txt
index b7345e61..c5859b68 100644
--- a/base/thirdparty/lpeg/CMakeLists.txt
+++ b/base/thirdparty/lpeg/CMakeLists.txt
@@ -48,7 +48,7 @@ include(ExternalProject)
 ExternalProject_Add(
     ${PROJECT_NAME}
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
-    URL http://distcache.FreeBSD.org/ports-distfiles/lpeg-${LPEG_RELEASE}.tar.gz
+    URL file://@lpeg@
     URL_MD5 d342571886f1abcb7afe6a83d024d583
     BUILD_IN_SOURCE 1
     PATCH_COMMAND COMMAND ${PATCH_CMD}
diff --git a/base/thirdparty/sdcv/CMakeLists.txt b/base/thirdparty/sdcv/CMakeLists.txt
index f19d441f..54394e0a 100644
--- a/base/thirdparty/sdcv/CMakeLists.txt
+++ b/base/thirdparty/sdcv/CMakeLists.txt
@@ -92,11 +92,7 @@ ko_write_gitclone_script(
 
 download_project(
     PROJ ${PROJECT_NAME}
-    GIT_REPOSITORY
-    https://github.com/Dushistov/sdcv.git
-    GIT_TAG
-    ${SDCV_GIT_COMMIT}
-    #DOWNLOAD_COMMAND ${CMAKE_COMMAND} -P ${GIT_CLONE_SCRIPT_FILENAME}
+    URL file://@sdcv@
     PATCH_COMMAND COMMAND ${PATCH_CMD1} COMMAND ${PATCH_CMD2}
 )
 
diff --git a/base/thirdparty/sdl2/CMakeLists.txt b/base/thirdparty/sdl2/CMakeLists.txt
index a963385c..6376cfe8 100644
--- a/base/thirdparty/sdl2/CMakeLists.txt
+++ b/base/thirdparty/sdl2/CMakeLists.txt
@@ -19,7 +19,7 @@ set(SDL2_VER "2.28.1")
 set(SDL2_MD5 "ccd2cd02b2ad4f71c2588747028953c3")
 download_project(
     PROJ ${PROJECT_NAME}
-    URL https://github.com/libsdl-org/SDL/releases/download/release-${SDL2_VER}/SDL2-${SDL2_VER}.tar.gz
+    URL file://@sdl2@
     URL_MD5 ${SDL2_MD5}
     PATCH_COMMAND COMMAND ${PATCH_CMD}
 )
diff --git a/base/thirdparty/sqlite/CMakeLists.txt b/base/thirdparty/sqlite/CMakeLists.txt
index 0353b145..9de56105 100644
--- a/base/thirdparty/sqlite/CMakeLists.txt
+++ b/base/thirdparty/sqlite/CMakeLists.txt
@@ -37,7 +37,7 @@ set(SQLITE_VER "3420000")
 ExternalProject_Add(
     ${PROJECT_NAME}
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
-    URL https://www.sqlite.org/2023/sqlite-autoconf-${SQLITE_VER}.tar.gz
+    URL file://@sqlite@
     URL_MD5 0c5a92bc51cf07cae45b4a1e94653dea
     BUILD_IN_SOURCE 1
     CONFIGURE_COMMAND ${CFG_CMD}
diff --git a/base/thirdparty/tar/CMakeLists.txt b/base/thirdparty/tar/CMakeLists.txt
index 9d0b82ca..1c1d4b8e 100644
--- a/base/thirdparty/tar/CMakeLists.txt
+++ b/base/thirdparty/tar/CMakeLists.txt
@@ -62,7 +62,7 @@ include(ExternalProject)
 set(TAR_VER "1.34")
 ExternalProject_Add(
     ${PROJECT_NAME}
-    URL http://ftpmirror.gnu.org/tar/tar-${TAR_VER}.tar.gz
+    URL file://@tar@
     URL_MD5 9d5949e4c2d9665546ac65dafc0e726a
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
     PATCH_COMMAND COMMAND ${PATCH_CMD1} COMMAND ${PATCH_CMD2}
diff --git a/base/thirdparty/zlib/CMakeLists.txt b/base/thirdparty/zlib/CMakeLists.txt
index 2350186d..0ea1394d 100644
--- a/base/thirdparty/zlib/CMakeLists.txt
+++ b/base/thirdparty/zlib/CMakeLists.txt
@@ -52,7 +52,7 @@ set(ZLIB_MD5 "7d9fc1d78ae2fa3e84fe98b77d006c63")
 ExternalProject_Add(
     ${PROJECT_NAME}
     DOWNLOAD_DIR ${KO_DOWNLOAD_DIR}
-    URL http://gentoo.osuosl.org/distfiles/zlib-${ZLIB_VER}.tar.xz
+    URL file://@zlib@
     URL_MD5 ${ZLIB_MD5}
     BUILD_IN_SOURCE 1
     PATCH_COMMAND COMMAND ${PATCH_CMD1} COMMAND ${PATCH_CMD2} COMMAND ${PATCH_CMD3}