$ git clone -n https://gitee.com/yueeranna/systemd.git /var/lib/mock/dist-an23-build-251329-63414/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an23-build-251329-63414/root/chroot_tmpdir/scmroot/systemd'...
$ git reset --hard 91f67169c7d8d56ca245cf78ecf7221e084869ca
HEAD is now at 91f6716 optimise spec file