$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-testthat.git /var/lib/mock/f41-build-822078-152664/root/chroot_tmpdir/scmroot/R-testthat
Cloning into '/var/lib/mock/f41-build-822078-152664/root/chroot_tmpdir/scmroot/R-testthat'...
$ git fetch origin 1cf49c9d83de35644c63e2623f61e86613b6af14:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-testthat
 * [new ref]         1cf49c9d83de35644c63e2623f61e86613b6af14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1cf49c9 Bootstrap (riscv64)