$ git clone -n https://gitee.com/lvfeicaiji_admin/java-1.8.0-alibaba-dragonwell.git /var/lib/mock/dist-an8.9-build-393819-72116/root/chroot_tmpdir/scmroot/java-1.8.0-alibaba-dragonwell
Cloning into '/var/lib/mock/dist-an8.9-build-393819-72116/root/chroot_tmpdir/scmroot/java-1.8.0-alibaba-dragonwell'...
$ git reset --hard 1eac76aa8f0a3aedaaefbe36c93ce1fe7d100bb1
HEAD is now at 1eac76a update source code to 8.19.20