$ git clone -n https://src.fedoraproject.org/rpms/R-metaheuristicopt.git /var/lib/mock/f38-build-side-42-init-devel-850497-28425/root/chroot_tmpdir/scmroot/R-metaheuristicopt
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-850497-28425/root/chroot_tmpdir/scmroot/R-metaheuristicopt'...
$ git fetch origin 2a84653c69c68e16a63f8cb09e5bd41a11c44454:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-metaheuristicopt
 * [new ref]         2a84653c69c68e16a63f8cb09e5bd41a11c44454 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a84653 Initial import (fedora#2185389).