$ git clone -n http://fedora.riscv.rocks:3000/rpms/perl-ExtUtils-CBuilder.git /var/lib/mock/f40-build-778980-130107/root/chroot_tmpdir/scmroot/perl-ExtUtils-CBuilder
Cloning into '/var/lib/mock/f40-build-778980-130107/root/chroot_tmpdir/scmroot/perl-ExtUtils-CBuilder'...
$ git fetch origin 55e5bb64adea84e2e1f5a347790efc16e13ab401:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/perl-ExtUtils-CBuilder
 * [new ref]         55e5bb64adea84e2e1f5a347790efc16e13ab401 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55e5bb6 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: