$ git clone -n https://gitee.com/src-anolis-os/xorg-x11-drv-nouveau.git /var/lib/mock/dist-an23-build-84803-42679/root/chroot_tmpdir/scmroot/xorg-x11-drv-nouveau
Cloning into '/var/lib/mock/dist-an23-build-84803-42679/root/chroot_tmpdir/scmroot/xorg-x11-drv-nouveau'...
$ git reset --hard origin/a23
HEAD is now at 7c4e83a readme: add desc for branch