$ git clone -n https://src.fedoraproject.org/rpms/kcron.git /var/lib/mock/f40-build-2332888-59184/root/chroot_tmpdir/scmroot/kcron
Cloning into '/var/lib/mock/f40-build-2332888-59184/root/chroot_tmpdir/scmroot/kcron'...
$ git fetch origin 49fdbcce831f670167a7da13fee7eebc31ab95fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcron
 * [new ref]         49fdbcce831f670167a7da13fee7eebc31ab95fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49fdbcc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild