$ git clone -n https://src.fedoraproject.org/rpms/libomp.git /var/lib/mock/f38-build-side-42-init-devel-627709-26370/root/chroot_tmpdir/scmroot/libomp
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-627709-26370/root/chroot_tmpdir/scmroot/libomp'...
$ git fetch origin afec9af613bde35d6c5461f5756d2e04b9c294da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libomp
 * [new ref]         afec9af613bde35d6c5461f5756d2e04b9c294da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afec9af Update to LLVM 16.0.0