$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-lua.git /var/lib/mock/f40-build-1931881-25123/root/chroot_tmpdir/scmroot/fcitx5-lua
Cloning into '/var/lib/mock/f40-build-1931881-25123/root/chroot_tmpdir/scmroot/fcitx5-lua'...
$ git fetch origin 2572f7a4991645b32f7caac5f12b24e362e1208e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-lua
 * [new ref]         2572f7a4991645b32f7caac5f12b24e362e1208e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2572f7a update to upstream release 5.0.13