$ git clone -n https://gitee.com/fundawang/libpng.git /var/lib/mock/dist-an23-build-288661-64871/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an23-build-288661-64871/root/chroot_tmpdir/scmroot/libpng'...
$ git reset --hard c4881a0fbbb55929f1452b0a605ecca60263b260
HEAD is now at c4881a0 1.6.40
$ git lfs pull