$ git clone -n https://gitee.com/huoyuanhao/libpng.git /var/lib/mock/dist-an7_9-updates-build-109378-45698/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an7_9-updates-build-109378-45698/root/chroot_tmpdir/scmroot/libpng'...
$ git reset --hard 6e9fb14cfe653698a6778fde65e79038b5b3e28e
HEAD is now at 6e9fb14 import libpng-1.6.34-5.el8.src.rpm