$ git clone -n https://gitee.com/wenyuzifang/gvfs.git /var/lib/mock/dist-an23-build-464799-73881/root/chroot_tmpdir/scmroot/gvfs
Cloning into '/var/lib/mock/dist-an23-build-464799-73881/root/chroot_tmpdir/scmroot/gvfs'...
$ git fetch origin b51a74463bf260a8ef9de25c80e087b7eecc479a:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/gvfs
 * [new ref]         b51a74463bf260a8ef9de25c80e087b7eecc479a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b51a744 Update code from upstream