$ git clone -n https://src.fedoraproject.org/rpms/american-fuzzy-lop.git /var/lib/mock/f39-build-2358403-60293/root/chroot_tmpdir/scmroot/american-fuzzy-lop
Cloning into '/var/lib/mock/f39-build-2358403-60293/root/chroot_tmpdir/scmroot/american-fuzzy-lop'...
$ git fetch origin b64b51b12293bf1193855fc24e08fa93bab080fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/american-fuzzy-lop
 * [new ref]         b64b51b12293bf1193855fc24e08fa93bab080fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b64b51b Rebuild with LLVM 17.0.0