$ git clone -n https://gitee.com/mgb01105731/libpng.git /var/lib/mock/dist-an23-build-132172-46675/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an23-build-132172-46675/root/chroot_tmpdir/scmroot/libpng'...
$ git reset --hard 80fdc494ad32eebc1d0dcb8e984b5e320b406471
HEAD is now at 80fdc49 add doc package