$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-rlang.git /var/lib/mock/f38-build-725024-99536/root/chroot_tmpdir/scmroot/R-rlang
Cloning into '/var/lib/mock/f38-build-725024-99536/root/chroot_tmpdir/scmroot/R-rlang'...
$ git fetch origin 60bd6ddc525bbebd121bbd557e11bc01b3d7a32f:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-rlang
 * [new ref]         60bd6ddc525bbebd121bbd557e11bc01b3d7a32f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 60bd6dd Bootstrap (riscv64)