$ git clone -n https://gitee.com/opencloudos-stream/dnf.git /var/lib/mock/dist-ocs23-build-9645-322/root/chroot_tmpdir/scmroot/dnf
Cloning into '/var/lib/mock/dist-ocs23-build-9645-322/root/chroot_tmpdir/scmroot/dnf'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/dnf
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 750ad97 !1 更新到4.14版本 Merge pull request !1 from nilusyi/master