$ git clone -n https://src.fedoraproject.org/rpms/kf6-knewstuff.git /var/lib/mock/f42-build-868031-175885/root/chroot_tmpdir/scmroot/kf6-knewstuff
Cloning into '/var/lib/mock/f42-build-868031-175885/root/chroot_tmpdir/scmroot/kf6-knewstuff'...
$ git fetch origin 74d7af85eefd9455bc5704c1ab3c543ae934a547:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-knewstuff
 * [new ref]         74d7af85eefd9455bc5704c1ab3c543ae934a547 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74d7af8 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild