$ git clone -n http://8.131.229.236/anolis-os/postfix /var/lib/mock/dist-el8-updates-build-16798-2666/root/chroot_tmpdir/scmroot/postfix
Cloning into '/var/lib/mock/dist-el8-updates-build-16798-2666/root/chroot_tmpdir/scmroot/postfix'...
$ git reset --hard origin/a8
HEAD is now at b901db8 update to postfix-3.3.1-12.el8_2.1.src.rpm