$ git clone -n https://src.fedoraproject.org/rpms/R-Rsolid.git /var/lib/mock/f41-build-719200-13081/root/chroot_tmpdir/scmroot/R-Rsolid
Cloning into '/var/lib/mock/f41-build-719200-13081/root/chroot_tmpdir/scmroot/R-Rsolid'...
$ git fetch origin ff53640c0c13813e58537d387424825f332627a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-Rsolid
 * [new ref]         ff53640c0c13813e58537d387424825f332627a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff53640 Eliminate use of obsolete %patchN syntax (#2283636)