Do not prepend 'v' before target Git tag

This change updates an issue with the update script that not the actual
tag was fetched, but that the character 'v' was prepended before the
target Git tag.

scripts/update.sh

@@ -39,7 +39,7 @@ done
 # Fetch from Git repository
 echo "Fetching $LINUX_TAG from Linux Git repository..."
 
-git --git-dir $LINUX_REPOSITORY/.git fetch origin --depth 1 v$LINUX_TAG
+git --git-dir $LINUX_REPOSITORY/.git fetch origin --depth 1 $LINUX_TAG
 git --git-dir $LINUX_REPOSITORY/.git checkout FETCH_HEAD
 
 if [[ -z "$LINUX_VERSION" ]]; then