$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-pdftools.git /var/lib/mock/f41-build-821567-152560/root/chroot_tmpdir/scmroot/R-pdftools
Cloning into '/var/lib/mock/f41-build-821567-152560/root/chroot_tmpdir/scmroot/R-pdftools'...
$ git fetch origin 6d8ca938c9d0693ff626349488a281f964b96350:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-pdftools
 * [new ref]         6d8ca938c9d0693ff626349488a281f964b96350 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d8ca93 Bootstrap (riscv64)