$ git clone -n http://fedora.riscv.rocks:3000/rpms/clang.git /var/lib/mock/f40-build-807893-145356/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/f40-build-807893-145356/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin a361f2fb59f21afc93d0f3c9032095610d3421fc:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/clang
 * [new ref]         a361f2fb59f21afc93d0f3c9032095610d3421fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a361f2f Merge remote-tracking branch 'up/f40' into f40-riscv64