$ git clone -n https://gitee.com/lzq11122/systemd.git /var/lib/mock/dist-an23-build-453856-73610/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an23-build-453856-73610/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin ba6388bfcadd22f5f99608186df68a7602dcb7da:KOJI_FETCH_HEAD
From https://gitee.com/lzq11122/systemd
 * [new ref]         ba6388bfcadd22f5f99608186df68a7602dcb7da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba6388b fix spec for add sw64 architecture