$ git clone -n https://src.fedoraproject.org/rpms/butt.git /var/lib/mock/f40-build-2586922-62467/root/chroot_tmpdir/scmroot/butt
Cloning into '/var/lib/mock/f40-build-2586922-62467/root/chroot_tmpdir/scmroot/butt'...
$ git fetch origin 10571a6d524344a13c110678dee6c048f3c4ed0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/butt
 * [new ref]         10571a6d524344a13c110678dee6c048f3c4ed0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10571a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild