$ git clone -n https://src.fedoraproject.org/rpms/kf5-kmbox.git /var/lib/mock/f40-build-2292637-56149/root/chroot_tmpdir/scmroot/kf5-kmbox
Cloning into '/var/lib/mock/f40-build-2292637-56149/root/chroot_tmpdir/scmroot/kf5-kmbox'...
$ git fetch origin 5b77c8491d9dea7970a515bf2f56df0e0af334c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kmbox
 * [new ref]         5b77c8491d9dea7970a515bf2f56df0e0af334c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b77c84 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild