$ git clone -n https://src.fedoraproject.org/rpms/materia-gtk-theme.git /var/lib/mock/f40-build-2664797-67075/root/chroot_tmpdir/scmroot/materia-gtk-theme
Cloning into '/var/lib/mock/f40-build-2664797-67075/root/chroot_tmpdir/scmroot/materia-gtk-theme'...
$ git fetch origin 984af89f1d2808d987923f3c8e0a3012188d9284:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/materia-gtk-theme
 * [new ref]         984af89f1d2808d987923f3c8e0a3012188d9284 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 984af89 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild