$ git clone -n https://src.fedoraproject.org/rpms/ttmkfdir.git /var/lib/mock/f40-build-789154-135664/root/chroot_tmpdir/scmroot/ttmkfdir
Cloning into '/var/lib/mock/f40-build-789154-135664/root/chroot_tmpdir/scmroot/ttmkfdir'...
$ git fetch origin 66f336b8da35a3845b9232175cb393b80ba81ca1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ttmkfdir
 * [new ref]         66f336b8da35a3845b9232175cb393b80ba81ca1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66f336b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild