fix: not use /github as default home directory to prevent conflicts (#11)

Author: wei

git-sync.sh

@@ -31,7 +31,7 @@ fi
 echo "SOURCE=$SOURCE_REPO:$SOURCE_BRANCH"
 echo "DESTINATION=$DESTINATION_REPO:$DESTINATION_BRANCH"
 
-git clone "$SOURCE_REPO" source --origin source && cd source
+git clone "$SOURCE_REPO" /root/source --origin source && cd /root/source
 git remote add destination "$DESTINATION_REPO"
 
 # Pull all branches references down locally so subsequent commands can see them