$ git clone -n https://gitee.com/lizhao2025/libgit2.git /var/lib/mock/dist-an23-build-500084-74764/root/chroot_tmpdir/scmroot/libgit2
Cloning into '/var/lib/mock/dist-an23-build-500084-74764/root/chroot_tmpdir/scmroot/libgit2'...
$ git fetch origin dd3744b9923b23ccd6fdee7dab5c84f851f734cf:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/libgit2
 * [new ref]         dd3744b9923b23ccd6fdee7dab5c84f851f734cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd3744b Update code from upstream