$ git clone -n https://src.fedoraproject.org/rpms/R-AUC.git /var/lib/mock/f41-build-side-1-3142738-40009/root/chroot_tmpdir/scmroot/R-AUC
Cloning into '/var/lib/mock/f41-build-side-1-3142738-40009/root/chroot_tmpdir/scmroot/R-AUC'...
$ git fetch origin d0317abb31e5f29e75ea5b99b04f5c8e664340b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-AUC
 * [new ref]         d0317abb31e5f29e75ea5b99b04f5c8e664340b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0317ab convert GPLv2+ license to SPDX