repo sync stops at the 99% (410/414)

i have tried some times， but all stop at 99%

Fetching project platform/external/linaro-android-tools Fetching project platform/hardware/samsung/origen/gralloc_ump Fetching project platform/frameworks/compile/libbcc Fetching projects: 98% (406/414) Fetching project platform/external/chromium_org/third_party/skia/gyp Fetching project platform/hardware/invensense Fetching project platform/external/ipsec-tools Fetching project device/samsung/proprietary-open Fetching projects: 99% (410/414) Fetching project platform/packages/wallpapers/Basic