$ git clone -n https://gitee.com/opencloudos-stream/dvblast.git /var/lib/mock/dist-oc9-epol-build-82273-57037/root/chroot_tmpdir/scmroot/dvblast
Cloning into '/var/lib/mock/dist-oc9-epol-build-82273-57037/root/chroot_tmpdir/scmroot/dvblast'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/dvblast
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2c35e4 package init