$ git clone -n https://src.fedoraproject.org/rpms/halibut.git /var/lib/mock/f39-build-1461672-33276/root/chroot_tmpdir/scmroot/halibut
Cloning into '/var/lib/mock/f39-build-1461672-33276/root/chroot_tmpdir/scmroot/halibut'...
$ git fetch origin f5a7a20f49e96c4112e74d3d589f51ba2d4c900e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/halibut
 * [new ref]         f5a7a20f49e96c4112e74d3d589f51ba2d4c900e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5a7a20 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild