$ git clone -n https://src.fedoraproject.org/rpms/antlr3.git /var/lib/mock/f40-build-1315004-23514/root/chroot_tmpdir/scmroot/antlr3
Cloning into '/var/lib/mock/f40-build-1315004-23514/root/chroot_tmpdir/scmroot/antlr3'...
$ git fetch origin fb82f7e97f738553696184e2ef9e94de4b747604:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/antlr3
 * [new ref]         fb82f7e97f738553696184e2ef9e94de4b747604 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb82f7e Rebuilt for java-21-openjdk as system jdk