$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/libxcb /var/lib/mock/dist-el8-build-5320-34/root/chroot_tmpdir/scmroot/libxcb
Cloning into '/var/lib/mock/dist-el8-build-5320-34/root/chroot_tmpdir/scmroot/libxcb'...
$ git reset --hard origin/a8
HEAD is now at ff47374 import libxcb-1.13.1-1.el8.src.rpm