$ git clone -n https://src.fedoraproject.org/rpms/llvm-test-suite.git /var/lib/mock/f45-build-17472-499/root/chroot_tmpdir/scmroot/llvm-test-suite
Cloning into '/var/lib/mock/f45-build-17472-499/root/chroot_tmpdir/scmroot/llvm-test-suite'...
$ git fetch origin 320086031a4fc0ecfb032690c73f5481a047b7d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm-test-suite
 * [new ref]         320086031a4fc0ecfb032690c73f5481a047b7d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3200860 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild