$ git clone -n https://src.fedoraproject.org/rpms/R-timeDate /var/lib/mock/f41-build-side-1-3149140-40244/root/chroot_tmpdir/scmroot/R-timeDate
Cloning into '/var/lib/mock/f41-build-side-1-3149140-40244/root/chroot_tmpdir/scmroot/R-timeDate'...
$ git fetch origin 98aa42a768c586a8257f1ff87001dc1bbedd3359:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-timeDate
 * [new ref]         98aa42a768c586a8257f1ff87001dc1bbedd3359 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98aa42a convert GPLv2+ license to SPDX