$ git clone -n https://src.fedoraproject.org/rpms/js-d3-flame-graph.git /var/lib/mock/f39-build-1664650-40722/root/chroot_tmpdir/scmroot/js-d3-flame-graph
Cloning into '/var/lib/mock/f39-build-1664650-40722/root/chroot_tmpdir/scmroot/js-d3-flame-graph'...
$ git fetch origin 858f4d89e8b0db75fc4b502e78a38a451e7ca7fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/js-d3-flame-graph
 * [new ref]         858f4d89e8b0db75fc4b502e78a38a451e7ca7fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 858f4d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild