$ git clone -n https://src.fedoraproject.org/rpms/ignition.git /var/lib/mock/f39-build-1668179-40824/root/chroot_tmpdir/scmroot/ignition
Cloning into '/var/lib/mock/f39-build-1668179-40824/root/chroot_tmpdir/scmroot/ignition'...
$ git fetch origin c4b231c156ff672aaecbf14ab0f1824b0f354af9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ignition
 * [new ref]         c4b231c156ff672aaecbf14ab0f1824b0f354af9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4b231c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild