$ git clone -n https://src.fedoraproject.org/rpms/llvm17.git /var/lib/mock/f42-build-864457-172319/root/chroot_tmpdir/scmroot/llvm17
Cloning into '/var/lib/mock/f42-build-864457-172319/root/chroot_tmpdir/scmroot/llvm17'...
$ git fetch origin 9904319ada09e539ad2f95016b2500123892375a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm17
 * [new ref]         9904319ada09e539ad2f95016b2500123892375a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9904319 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild