$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/boom-boot /var/lib/mock/dist-el8-build-128-27/root/chroot_tmpdir/scmroot/boom-boot
Cloning into '/var/lib/mock/dist-el8-build-128-27/root/chroot_tmpdir/scmroot/boom-boot'...
$ git reset --hard origin/a8
HEAD is now at c65289f import boom-boot-1.0-1.el8.src.rpm