$ git clone -n https://gitee.com/src-anolis-os/python-tornado.git /var/lib/mock/dist-an7-build-61813-34075/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-an7-build-61813-34075/root/chroot_tmpdir/scmroot/python-tornado'...
$ git reset --hard origin/a7
HEAD is now at 17e0b30 import python-tornado-4.2.1-5.el7.src.rpm