$ git clone -n https://src.fedoraproject.org/rpms/R-prettycode.git /var/lib/mock/f45-build-6328-347/root/chroot_tmpdir/scmroot/R-prettycode
Cloning into '/var/lib/mock/f45-build-6328-347/root/chroot_tmpdir/scmroot/R-prettycode'...
$ git fetch origin 00d43204902f41bf6a81e2e1ab952b868063a6d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-prettycode
 * [new ref]         00d43204902f41bf6a81e2e1ab952b868063a6d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00d4320 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild