diff --git a/build_mainline.sh b/build_mainline.sh
index 7bed9a2bb56b4fc6d4cd67e69a65e8daa0cbb5a6..a157460a3f37b1e292a23219049aff82634c5b0c 100755
--- a/build_mainline.sh
+++ b/build_mainline.sh
@@ -190,6 +190,7 @@ fi
 #unset FULL_REBUILD
 FULL_REBUILD=1
 if [ "${FULL_REBUILD}" ] ; then
+	export TOPOFTREE=1
 	/bin/bash -e "${DIR}/scripts/git.sh" || { exit 1 ; }
 
 	if [ "${RUN_BISECT}" ] ; then
@@ -217,4 +218,4 @@ if [ "${IMX_BOOTLETS}" ] ; then
 		exit
 	fi
 	make_bootlets
-fi
\ No newline at end of file
+fi
diff --git a/scripts/git.sh b/scripts/git.sh
index 6e21e82c6848b07d0918b8d1e9ef6d3ec6cceefb..d85c4d3245e58ea2f5fb0c8e918ed853f3139cbb 100755
--- a/scripts/git.sh
+++ b/scripts/git.sh
@@ -132,6 +132,11 @@ git_kernel () {
 		git checkout ${KERNEL_SHA} -b v${KERNEL_TAG}-${BUILD}
 	fi
 
+	if [ "${TOPOFTREE}" ] ; then
+		git pull ${GIT_OPTS} ${torvalds_linux} master || true
+		git pull ${GIT_OPTS} ${torvalds_linux} master --tags || true
+	fi
+
 	git describe
 
 	cd ${DIR}/