$ git clone -n https://src.fedoraproject.org/rpms/kf6-kxmlgui.git /var/lib/mock/f42-build-868039-175885/root/chroot_tmpdir/scmroot/kf6-kxmlgui
Cloning into '/var/lib/mock/f42-build-868039-175885/root/chroot_tmpdir/scmroot/kf6-kxmlgui'...
$ git fetch origin e53f9d27e82a21cdc9c64b5ebf79bb3e661815b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kxmlgui
 * [new ref]         e53f9d27e82a21cdc9c64b5ebf79bb3e661815b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e53f9d2 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild