$ git clone -n http://fedora.riscv.rocks:3000/rpms/clang.git /var/lib/mock/f38-build-721776-98677/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/f38-build-721776-98677/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin a961981e37e727d8477452cae3fb2ba093eaa404:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/clang
 * [new ref]         a961981e37e727d8477452cae3fb2ba093eaa404 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a961981 Merge remote-tracking branch 'up/f38' into f38-riscv64