$ git clone -n https://src.fedoraproject.org/rpms/QuantLib.git /var/lib/mock/f39-build-1470406-33893/root/chroot_tmpdir/scmroot/QuantLib
Cloning into '/var/lib/mock/f39-build-1470406-33893/root/chroot_tmpdir/scmroot/QuantLib'...
$ git fetch origin c96d3f29dc6b14ab7513f0c7d5e8430a64cb7e44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/QuantLib
 * [new ref]         c96d3f29dc6b14ab7513f0c7d5e8430a64cb7e44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c96d3f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild