$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-cliapp.git /var/lib/mock/f41-build-840050-160507/root/chroot_tmpdir/scmroot/R-cliapp
Cloning into '/var/lib/mock/f41-build-840050-160507/root/chroot_tmpdir/scmroot/R-cliapp'...
$ git fetch origin 9d5c558fb17a5105b330b5855fa4a69e7f9554c2:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-cliapp
 * [new ref]         9d5c558fb17a5105b330b5855fa4a69e7f9554c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d5c558 Turn off bootstrap (riscv64)