$ git clone -n https://gitee.com/src-anolis-os/gcc-toolset-9.git /var/lib/mock/dist-an8.7-build-269775-64112/root/chroot_tmpdir/scmroot/gcc-toolset-9
Cloning into '/var/lib/mock/dist-an8.7-build-269775-64112/root/chroot_tmpdir/scmroot/gcc-toolset-9'...
$ git reset --hard origin/a8
HEAD is now at 426d462 import gcc-toolset-9-9.0-4.el8.src.rpm