$ git clone -n https://src.fedoraproject.org/rpms/llvm11.git /var/lib/mock/f39-build-2366759-60379/root/chroot_tmpdir/scmroot/llvm11
Cloning into '/var/lib/mock/f39-build-2366759-60379/root/chroot_tmpdir/scmroot/llvm11'...
$ git fetch origin f5dc04f266e5fa91bf5505f1674a62dd6b7cc243:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm11
 * [new ref]         f5dc04f266e5fa91bf5505f1674a62dd6b7cc243 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5dc04f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild