$ git clone -n https://gitee.com/wenyuzifang/xsimd.git /var/lib/mock/dist-an23-build-466186-73955/root/chroot_tmpdir/scmroot/xsimd
Cloning into '/var/lib/mock/dist-an23-build-466186-73955/root/chroot_tmpdir/scmroot/xsimd'...
$ git fetch origin 2d07691ced6e9c4dda189e116cf6612db4f8510e:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/xsimd
 * [new ref]         2d07691ced6e9c4dda189e116cf6612db4f8510e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d07691 Update code from upstream