$ git clone -n https://src.fedoraproject.org/rpms/kgraphviewer.git /var/lib/mock/f40-build-2540632-61859/root/chroot_tmpdir/scmroot/kgraphviewer
Cloning into '/var/lib/mock/f40-build-2540632-61859/root/chroot_tmpdir/scmroot/kgraphviewer'...
$ git fetch origin 2204baf0dd8543fe9fba065bc8ebe4abc8e1e3a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgraphviewer
 * [new ref]         2204baf0dd8543fe9fba065bc8ebe4abc8e1e3a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2204baf Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild