$ git clone -n http://fedora.riscv.rocks:3000/rpms/clang.git /var/lib/mock/f40-build-735321-106406/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/f40-build-735321-106406/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin a7556e636e45e9e7ad6a5dc7b44cc6ff397cf44f:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/clang
 * [new ref]         a7556e636e45e9e7ad6a5dc7b44cc6ff397cf44f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7556e6 Bring back GCC toolchain for now