$ git clone -n https://src.fedoraproject.org/rpms/R-IRdisplay.git /var/lib/mock/f38-build-side-42-init-devel-840898-28411/root/chroot_tmpdir/scmroot/R-IRdisplay
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-840898-28411/root/chroot_tmpdir/scmroot/R-IRdisplay'...
$ git fetch origin 4531822ac1482b223de93ba6512e450408a537c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-IRdisplay
 * [new ref]         4531822ac1482b223de93ba6512e450408a537c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4531822 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild