$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/gcc-toolset-9-ltrace /var/lib/mock/dist-el8-build-6201-84/root/chroot_tmpdir/scmroot/gcc-toolset-9-ltrace
Cloning into '/var/lib/mock/dist-el8-build-6201-84/root/chroot_tmpdir/scmroot/gcc-toolset-9-ltrace'...
$ git reset --hard origin/a8
HEAD is now at 9d6bd31 import gcc-toolset-9-ltrace-0.7.91-1.el8.src.rpm