$ git clone -n https://gitee.com/opencloudos-stream/update-desktop-files.git /var/lib/mock/dist-oc9-epol-build-119729-70801/root/chroot_tmpdir/scmroot/update-desktop-files
Cloning into '/var/lib/mock/dist-oc9-epol-build-119729-70801/root/chroot_tmpdir/scmroot/update-desktop-files'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/update-desktop-files
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e947d73 !2 initial build. Merge pull request !2 from 陈玉峰/master