$ git clone -n https://src.fedoraproject.org/rpms/xfce4-panel.git /var/lib/mock/f39-build-1524239-36028/root/chroot_tmpdir/scmroot/xfce4-panel
Cloning into '/var/lib/mock/f39-build-1524239-36028/root/chroot_tmpdir/scmroot/xfce4-panel'...
$ git fetch origin 3816f05ef19cf06b79c72ac539dc43880eda80c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-panel
 * [new ref]         3816f05ef19cf06b79c72ac539dc43880eda80c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3816f05 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild