$ git clone -n http://fedora.riscv.rocks:3000/rpms/clang.git /var/lib/mock/f40-build-799395-142320/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/f40-build-799395-142320/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin 9912950ca366f09b11077544a303f129363f68fc:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/clang
 * [new ref]         9912950ca366f09b11077544a303f129363f68fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9912950 Disable tests on riscv64