$ git clone -n https://gitee.com/gaohongmei/zlib.git /var/lib/mock/dist-an7_9-updates-build-140352-52034/root/chroot_tmpdir/scmroot/zlib Cloning into '/var/lib/mock/dist-an7_9-updates-build-140352-52034/root/chroot_tmpdir/scmroot/zlib'... $ git reset --hard 3b4657b4d5d4dc8a6d0194df22e66294caff1752 HEAD is now at 3b4657b Added chunkcopy_neon optimization, which can improve decompression performance by 12.5% ​​under lzbench. This optimization method is transplanted from zlib-ng, upstream: https://github.com/zlib-ng/zlib-ng/blob/develop/arch/arm /chunkset_neon.c