$ git clone -n http://fedora.riscv.rocks:3000/rpms/R.git /var/lib/mock/f42-build-861897-170473/root/chroot_tmpdir/scmroot/R
Cloning into '/var/lib/mock/f42-build-861897-170473/root/chroot_tmpdir/scmroot/R'...
$ git fetch origin 3e48b97e7c0b8c00dda1f0a7fa19a4379f433c42:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R
 * [new ref]         3e48b97e7c0b8c00dda1f0a7fa19a4379f433c42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e48b97 Merge remote-tracking branch 'up/main' into main-riscv64