$ git clone -n https://src.fedoraproject.org/rpms/libart.git /var/lib/mock/f40-build-2049591-49017/root/chroot_tmpdir/scmroot/libart
Cloning into '/var/lib/mock/f40-build-2049591-49017/root/chroot_tmpdir/scmroot/libart'...
$ git fetch origin 09b1f85a90307da4aecd4942a404099c0f7d029b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libart
 * [new ref]         09b1f85a90307da4aecd4942a404099c0f7d029b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09b1f85 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild