$ git clone -n https://src.fedoraproject.org/rpms/R-quantities.git /var/lib/mock/f38-build-side-42-init-devel-865109-28430/root/chroot_tmpdir/scmroot/R-quantities
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-865109-28430/root/chroot_tmpdir/scmroot/R-quantities'...
$ git fetch origin 2dda859fd23aa3d04113ef5c08a9a9beb0dd4a46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-quantities
 * [new ref]         2dda859fd23aa3d04113ef5c08a9a9beb0dd4a46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2dda859 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild