$ git clone -n https://gitee.com/src-anolis-os/systemd.git /var/lib/mock/dist-an8-build-66344-37228/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an8-build-66344-37228/root/chroot_tmpdir/scmroot/systemd'...
$ git reset --hard origin/a8
Updating files:  98% (662/675)
Updating files:  99% (669/675)
Updating files: 100% (675/675)
Updating files: 100% (675/675), done.
HEAD is now at c93d464 Update to latest hwdb