$ git clone -n https://src.fedoraproject.org/rpms/rust-predicates-tree.git /var/lib/mock/f40-build-2116204-50704/root/chroot_tmpdir/scmroot/rust-predicates-tree
Cloning into '/var/lib/mock/f40-build-2116204-50704/root/chroot_tmpdir/scmroot/rust-predicates-tree'...
$ git fetch origin baaa8f1fa7601f37ddaaa91bff07d013a352ff1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-predicates-tree
 * [new ref]         baaa8f1fa7601f37ddaaa91bff07d013a352ff1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at baaa8f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild