$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-magick.git /var/lib/mock/f41-build-840068-160507/root/chroot_tmpdir/scmroot/R-magick
Cloning into '/var/lib/mock/f41-build-840068-160507/root/chroot_tmpdir/scmroot/R-magick'...
$ git fetch origin 5159627677e459979507ca3a3c13c38fd004e948:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-magick
 * [new ref]         5159627677e459979507ca3a3c13c38fd004e948 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5159627 Turn off bootstrap (riscv64)