$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/ipxe /var/lib/mock/dist-el8-build-6299-94/root/chroot_tmpdir/scmroot/ipxe
Cloning into '/var/lib/mock/dist-el8-build-6299-94/root/chroot_tmpdir/scmroot/ipxe'...
$ git reset --hard origin/a8
HEAD is now at c8bab60 import ipxe-20181214-5.git133f4c47.el8.src.rpm