$ git clone -n https://gitee.com/wenyuzifang/sdl12-compat.git /var/lib/mock/dist-an23-build-472740-74118/root/chroot_tmpdir/scmroot/sdl12-compat
Cloning into '/var/lib/mock/dist-an23-build-472740-74118/root/chroot_tmpdir/scmroot/sdl12-compat'...
$ git fetch origin d2320dd4a724f1b8eeb0d01dce097b4a9bbe00be:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/sdl12-compat
 * [new ref]         d2320dd4a724f1b8eeb0d01dce097b4a9bbe00be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2320dd Update code from upstream