$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/postgresql-jdbc /var/lib/mock/dist-el8-build-7010-263/root/chroot_tmpdir/scmroot/postgresql-jdbc
Cloning into '/var/lib/mock/dist-el8-build-7010-263/root/chroot_tmpdir/scmroot/postgresql-jdbc'...
$ git reset --hard origin/a8
HEAD is now at 9b0b4eb import postgresql-jdbc-42.2.3-1.el8.src.rpm