$ git clone -n https://src.fedoraproject.org/rpms/lua-mpack.git /var/lib/mock/f40-build-730526-103434/root/chroot_tmpdir/scmroot/lua-mpack
Cloning into '/var/lib/mock/f40-build-730526-103434/root/chroot_tmpdir/scmroot/lua-mpack'...
$ git fetch origin a677b474f1b868bff7ec37c6ef22336856d335b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lua-mpack
 * [new ref]         a677b474f1b868bff7ec37c6ef22336856d335b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a677b47 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild