$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-highr.git /var/lib/mock/f41-build-838716-159753/root/chroot_tmpdir/scmroot/R-highr
Cloning into '/var/lib/mock/f41-build-838716-159753/root/chroot_tmpdir/scmroot/R-highr'...
$ git fetch origin 1b3452e255153b640fdfabb15c9616c8ed0566ff:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-highr
 * [new ref]         1b3452e255153b640fdfabb15c9616c8ed0566ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b3452e Enable bootstrap