$ git clone -n https://src.fedoraproject.org/rpms/R-tufte /var/lib/mock/f41-build-side-1-3149153-40244/root/chroot_tmpdir/scmroot/R-tufte
Cloning into '/var/lib/mock/f41-build-side-1-3149153-40244/root/chroot_tmpdir/scmroot/R-tufte'...
$ git fetch origin 9e0679fdfe7b7264502a526b92eda63890b0949e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-tufte
 * [new ref]         9e0679fdfe7b7264502a526b92eda63890b0949e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e0679f convert GPLv3 license to SPDX