$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-htmlwidgets.git /var/lib/mock/f41-build-840060-160507/root/chroot_tmpdir/scmroot/R-htmlwidgets
Cloning into '/var/lib/mock/f41-build-840060-160507/root/chroot_tmpdir/scmroot/R-htmlwidgets'...
$ git fetch origin 57e721d3012cdeb707432f5b0b964c672d76781d:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-htmlwidgets
 * [new ref]         57e721d3012cdeb707432f5b0b964c672d76781d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57e721d Turn off bootstrap (riscv64)