$ git clone -n https://gitee.com/zhoujiajia111/libtheora.git /var/lib/mock/dist-an23.2-build-429540-73017/root/chroot_tmpdir/scmroot/libtheora
Cloning into '/var/lib/mock/dist-an23.2-build-429540-73017/root/chroot_tmpdir/scmroot/libtheora'...
$ git fetch origin 2f5cc68b7f44b311f3929550eca438e8cefad0d5:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/libtheora
 * [new ref]         2f5cc68b7f44b311f3929550eca438e8cefad0d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f5cc68 update libtheora.spec.