$ git clone -n https://src.fedoraproject.org/rpms/modem-manager-gui.git /var/lib/mock/f40-build-797615-141419/root/chroot_tmpdir/scmroot/modem-manager-gui
Cloning into '/var/lib/mock/f40-build-797615-141419/root/chroot_tmpdir/scmroot/modem-manager-gui'...
$ git fetch origin fae316b0b2c19a0660f38372734e2bb228b6e03e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/modem-manager-gui
 * [new ref]         fae316b0b2c19a0660f38372734e2bb228b6e03e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fae316b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild