$ git clone -n https://src.fedoraproject.org/rpms/QuantLib.git /var/lib/mock/f40-build-780314-130929/root/chroot_tmpdir/scmroot/QuantLib
Cloning into '/var/lib/mock/f40-build-780314-130929/root/chroot_tmpdir/scmroot/QuantLib'...
$ git fetch origin 8d67376bbcc854609c404cff41644f4f835373f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/QuantLib
 * [new ref]         8d67376bbcc854609c404cff41644f4f835373f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d67376 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild