$ git clone -n https://src.fedoraproject.org/rpms/llvm-test-suite.git /var/lib/mock/f42-build-side-1-3501330-45974/root/chroot_tmpdir/scmroot/llvm-test-suite
Cloning into '/var/lib/mock/f42-build-side-1-3501330-45974/root/chroot_tmpdir/scmroot/llvm-test-suite'...
$ git fetch origin d0da5443abdaf171ca2b3aa394fdfcced0fa01a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm-test-suite
 * [new ref]         d0da5443abdaf171ca2b3aa394fdfcced0fa01a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0da544 Update to LLVM 20.1.2