$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/nettle.git /var/lib/mock/dist-an7-build-29301-15373/root/chroot_tmpdir/scmroot/nettle
Cloning into '/var/lib/mock/dist-an7-build-29301-15373/root/chroot_tmpdir/scmroot/nettle'...
$ git reset --hard origin/a7
HEAD is now at 7f03662 import nettle-2.7.1-8.el7.src.rpm