$ git clone -n https://src.fedoraproject.org/rpms/rhythmbox.git /var/lib/mock/f40-build-2321622-58597/root/chroot_tmpdir/scmroot/rhythmbox
Cloning into '/var/lib/mock/f40-build-2321622-58597/root/chroot_tmpdir/scmroot/rhythmbox'...
$ git fetch origin 6c4ba07c25e1cf148fc519e4e0231fc521a7f4cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rhythmbox
 * [new ref]         6c4ba07c25e1cf148fc519e4e0231fc521a7f4cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c4ba07 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild