$ git clone -n https://gitee.com/mgb01105731/gcc.git /var/lib/mock/dist-an23-build-156186-58313/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-an23-build-156186-58313/root/chroot_tmpdir/scmroot/gcc'...
$ git reset --hard origin/a23
HEAD is now at 120c821 optimise spec file