$ git clone -n https://src.fedoraproject.org/rpms/R-RcppCCTZ.git /var/lib/mock/f41-build-side-1-3142777-40009/root/chroot_tmpdir/scmroot/R-RcppCCTZ
Cloning into '/var/lib/mock/f41-build-side-1-3142777-40009/root/chroot_tmpdir/scmroot/R-RcppCCTZ'...
$ git fetch origin 3d460abadca731624ebf496a8aa3ab0750a8a30f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-RcppCCTZ
 * [new ref]         3d460abadca731624ebf496a8aa3ab0750a8a30f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d460ab convert GPLv2+ license to SPDX