$ git clone -n https://src.fedoraproject.org/rpms/emacs-popup.git /var/lib/mock/f45-build-8128-377/root/chroot_tmpdir/scmroot/emacs-popup
Cloning into '/var/lib/mock/f45-build-8128-377/root/chroot_tmpdir/scmroot/emacs-popup'...
$ git fetch origin 429442eb9fc6de21bfedf0bb77a819772ca30614:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-popup
 * [new ref]         429442eb9fc6de21bfedf0bb77a819772ca30614 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 429442e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild