diff --git a/download_toolchain.sh b/download_toolchain.sh
index 1556c56410bbef3a25258db97c5e3a2f5dbd2bdd..85488825c22fe409c882bdb935fd621eb1e83fd5 100755
--- a/download_toolchain.sh
+++ b/download_toolchain.sh
@@ -65,7 +65,7 @@ function SHELL_FUNCTION_PASER(){
 		fi
 	done
 }
-function SHELL_FUNCTION_KERNAL(){
+function SHELL_FUNCTION_KERNAL_WGET(){
 	#echo "git_repository (git)   : ${git_repository_git}"
 	echo "git_repository (https) : ${git_repository_https}"
 
@@ -115,6 +115,54 @@ function SHELL_FUNCTION_KERNAL(){
 
 	return
 }
+function SHELL_FUNCTION_KERNAL_GIT_CLONE(){
+	#echo "git_repository (git)   : ${git_repository_git}"
+	echo "git_repository (https) : ${git_repository_https}"
+
+	git init 1>log.txt 2>&1
+	
+	git remote add origin ${git_repository_address} 1>log.txt 2>&1
+	
+	git remote show origin > git_remote.log.txt
+
+	cat git_remote.log.txt | grep "gcc" | sed -e 's/^[ ]*//g' | cut -d ' ' -f 1 > git_branch.log.txt
+
+	if [ ${SHELL_OPTIONS_LIST} ]; then
+		echo "[git branch list]"
+		cat -n git_branch.log.txt
+		return
+	fi	
+	
+	for argv in $*; do
+		cat git_branch.log.txt | grep "${argv} " > git_branch.log.txt.next
+		if [[ ! -s git_branch.log.txt.next ]] ;	then
+			cat git_branch.log.txt | grep "${argv}" > git_branch.log.txt.next			
+		fi
+		
+		mv git_branch.log.txt.next git_branch.log.txt
+	done
+
+
+	git_branch=$(cat git_branch.log.txt | head -n 1)
+	git_branch=`echo ${git_branch}`
+	git_branch=${git_branch%% *}
+	
+	echo "git_branch     : ${git_branch}"
+	echo "git_cmd        : git clone ${git_repository_https} --depth 2 -b ${git_branch}"
+
+	git clone ${git_repository_https} --quiet --depth 1 -b ${git_branch}
+	mv ${git_project} toolchain-${git_branch}
+
+	git clone ${git_repository_https} --quiet --depth 1 -b ${git_branch_common}
+	mv ${git_project} toolchain-${git_branch_common}
+
+	rm -rf ../${git_branch}
+	mkdir -p ../${git_branch}
+	mv toolchain-${git_branch}/* ../${git_branch}/
+	mv toolchain-${git_branch_common}/* ../${git_branch}/
+
+	return
+}
 
 SHELL_FUNCTION_PASER $*
 if [ ${SHELL_OPTIONS_HELP} ]; then
@@ -123,7 +171,7 @@ else
 	TEMP_DIR=TEMP_$(date "+%Y.%m.%d.%H.%M.%S")
 	mkdir -p ${TEMP_DIR}
 	cd ${TEMP_DIR}
-		SHELL_FUNCTION_KERNAL $*
+		SHELL_FUNCTION_KERNAL_GIT_CLONE $*
 		cd ..
 	rm -rf ./${TEMP_DIR}
 fi	
\ No newline at end of file