$ git clone -n https://src.fedoraproject.org/rpms/astrometry.git /var/lib/mock/f39-build-1678938-40932/root/chroot_tmpdir/scmroot/astrometry
Cloning into '/var/lib/mock/f39-build-1678938-40932/root/chroot_tmpdir/scmroot/astrometry'...
$ git fetch origin c27927eae9fd69f5966af696bd3aa118ec87a2fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/astrometry
 * [new ref]         c27927eae9fd69f5966af696bd3aa118ec87a2fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c27927e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild