$ git clone -n https://gitee.com/mgb01105731/libffi.git /var/lib/mock/dist-an23-build-131019-46317/root/chroot_tmpdir/scmroot/libffi
Cloning into '/var/lib/mock/dist-an23-build-131019-46317/root/chroot_tmpdir/scmroot/libffi'...
$ git reset --hard 5ac7270e6c23b882e66f943cd10aeaa0ad685cad
HEAD is now at 5ac7270 add doc package