$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-curl.git /var/lib/mock/f38-build-724390-99434/root/chroot_tmpdir/scmroot/R-curl
Cloning into '/var/lib/mock/f38-build-724390-99434/root/chroot_tmpdir/scmroot/R-curl'...
$ git fetch origin b437f21b0e6d49cb4a6d717a18553b1bfd322b4b:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-curl
 * [new ref]         b437f21b0e6d49cb4a6d717a18553b1bfd322b4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b437f21 Bootstrap (riscv64)