$ git clone -n https://gitee.com/fundawang/libpng.git /var/lib/mock/dist-an23-build-288668-64871/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an23-build-288668-64871/root/chroot_tmpdir/scmroot/libpng'...
$ git reset --hard 395994621e00dd22f02bdc45cc9cf9ed7c6573be
HEAD is now at 3959946 1.6.40
$ git lfs pull