$ git clone -n https://gitee.com/mgb01105731/dnf.git /var/lib/mock/dist-an23-build-151713-57926/root/chroot_tmpdir/scmroot/dnf
Cloning into '/var/lib/mock/dist-an23-build-151713-57926/root/chroot_tmpdir/scmroot/dnf'...
$ git reset --hard origin/a23
HEAD is now at d0d9432 optimise spec file