$ git clone -n https://src.fedoraproject.org/rpms/jfreechart.git /var/lib/mock/f40-build-2146292-50887/root/chroot_tmpdir/scmroot/jfreechart
Cloning into '/var/lib/mock/f40-build-2146292-50887/root/chroot_tmpdir/scmroot/jfreechart'...
$ git fetch origin ac485fc3cef42474dcc7355ae7e8236e52dd5926:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jfreechart
 * [new ref]         ac485fc3cef42474dcc7355ae7e8236e52dd5926 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac485fc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild