$ git clone -n https://gitee.com/opencloudos-stream/git-extras.git /var/lib/mock/dist-oc9-epol-build-253132-84259/root/chroot_tmpdir/scmroot/git-extras
Cloning into '/var/lib/mock/dist-oc9-epol-build-253132-84259/root/chroot_tmpdir/scmroot/git-extras'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/git-extras
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8e3cf8 !2 Upgrade git-extras to 7.3.0 Merge pull request !2 from ocs-bot/agent/upg-497