$ git clone -n https://src.fedoraproject.org/rpms/flopgen.git /var/lib/mock/f40-build-1996570-44033/root/chroot_tmpdir/scmroot/flopgen
Cloning into '/var/lib/mock/f40-build-1996570-44033/root/chroot_tmpdir/scmroot/flopgen'...
$ git fetch origin 5044894789271683cd5f108e10eefa1cc88b3cbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flopgen
 * [new ref]         5044894789271683cd5f108e10eefa1cc88b3cbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5044894 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild