$ git clone -n https://gitee.com/yueeranna/libaec.git /var/lib/mock/dist-an23-build-274626-64234/root/chroot_tmpdir/scmroot/libaec
Cloning into '/var/lib/mock/dist-an23-build-274626-64234/root/chroot_tmpdir/scmroot/libaec'...
$ git fetch origin 8de649b1ac890429f610b3baa1103d91e8f00a80:KOJI_FETCH_HEAD
From https://gitee.com/yueeranna/libaec
 * [new ref]         8de649b1ac890429f610b3baa1103d91e8f00a80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8de649b init from upstream