$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc8-build-237989-82489/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc8-build-237989-82489/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 7e363d76eeed50bf2b99b26adf2226c284265365:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         7e363d76eeed50bf2b99b26adf2226c284265365 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e363d7 import systemd-239-82.tl3.16.ap.1