$ git clone -n https://gitee.com/fundawang/tengine.git /var/lib/mock/dist-an23-build-296897-65802/root/chroot_tmpdir/scmroot/tengine
Cloning into '/var/lib/mock/dist-an23-build-296897-65802/root/chroot_tmpdir/scmroot/tengine'...
$ git fetch origin 4a89872ebf5fd72dca7dad22e40f9b8c4cc1133c:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/tengine
 * [new ref]         4a89872ebf5fd72dca7dad22e40f9b8c4cc1133c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a89872 build tongsuo first