fix script (#1)

.devcontainer/toolchain/scripts/get-buildroot.sh

@@ -7,10 +7,10 @@ set -o nounset
 
 git clone git://git.buildroot.net/buildroot /buildroot
 
-rsync -a /workspace/config/board/ /buildroot/board/
-rsync -a /workspace/config/configs/ /buildroot/configs/
-
 cd /buildroot
 git checkout -b csel 2021.11.1
 
+rsync -a /workspace/config/board/ /buildroot/board/
+rsync -a /workspace/config/configs/ /buildroot/configs/
+
 make csel_defconfig