$ git clone -n https://src.fedoraproject.org/rpms/emacs-lua.git /var/lib/mock/f45-build-8109-376/root/chroot_tmpdir/scmroot/emacs-lua
Cloning into '/var/lib/mock/f45-build-8109-376/root/chroot_tmpdir/scmroot/emacs-lua'...
$ git fetch origin 2681e16f7d9f6430fa40d5742763562e2c878b96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-lua
 * [new ref]         2681e16f7d9f6430fa40d5742763562e2c878b96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2681e16 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild