$ git clone -n https://gitee.com/youyiljm/libunwind.git /var/lib/mock/dist-an23-build-506844-74878/root/chroot_tmpdir/scmroot/libunwind
Cloning into '/var/lib/mock/dist-an23-build-506844-74878/root/chroot_tmpdir/scmroot/libunwind'...
$ git fetch origin ff47506945ea67699a6eae87bc67c0bc770814db:KOJI_FETCH_HEAD
From https://gitee.com/youyiljm/libunwind
 * [new ref]         ff47506945ea67699a6eae87bc67c0bc770814db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff47506 support sw_64