$ git clone -n https://gitee.com/opencloudos-stream/guvcview.git /var/lib/mock/dist-oc9-epol-build-115324-67956/root/chroot_tmpdir/scmroot/guvcview
Cloning into '/var/lib/mock/dist-oc9-epol-build-115324-67956/root/chroot_tmpdir/scmroot/guvcview'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/guvcview
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8879eb package init