$ git clone -n https://src.fedoraproject.org/rpms/lightly.git /var/lib/mock/f39-build-1589261-38232/root/chroot_tmpdir/scmroot/lightly
Cloning into '/var/lib/mock/f39-build-1589261-38232/root/chroot_tmpdir/scmroot/lightly'...
$ git fetch origin c27d0d3282b0fb551a9b016ba07671592b307092:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lightly
 * [new ref]         c27d0d3282b0fb551a9b016ba07671592b307092 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c27d0d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild