$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-rprojroot.git /var/lib/mock/f41-build-840081-160507/root/chroot_tmpdir/scmroot/R-rprojroot
Cloning into '/var/lib/mock/f41-build-840081-160507/root/chroot_tmpdir/scmroot/R-rprojroot'...
$ git fetch origin 006574396d915bd96233f0a61ace5dcb378f25dc:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-rprojroot
 * [new ref]         006574396d915bd96233f0a61ace5dcb378f25dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0065743 Turn off bootstrap (riscv64)