$ git clone -n https://gitee.com/wenyuzifang/libburn.git /var/lib/mock/dist-an23-build-482679-74272/root/chroot_tmpdir/scmroot/libburn
Cloning into '/var/lib/mock/dist-an23-build-482679-74272/root/chroot_tmpdir/scmroot/libburn'...
$ git fetch origin 54cd98e2b79db1c069b987f18a093c36146b2d60:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libburn
 * [new ref]         54cd98e2b79db1c069b987f18a093c36146b2d60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54cd98e Update code from upstream