$ git clone -n https://gitee.com/src-anolis-os/libpng.git /var/lib/mock/dist-lifsea8-build-75577-39259/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-lifsea8-build-75577-39259/root/chroot_tmpdir/scmroot/libpng'...
$ git reset --hard origin/a8
HEAD is now at 6e9fb14 import libpng-1.6.34-5.el8.src.rpm