$ git clone -n https://src.fedoraproject.org/rpms/antlr4-project.git /var/lib/mock/f40-build-2508593-61703/root/chroot_tmpdir/scmroot/antlr4-project
Cloning into '/var/lib/mock/f40-build-2508593-61703/root/chroot_tmpdir/scmroot/antlr4-project'...
$ git fetch origin a28cc1cc20830cb1e5282cad8b071c04beacee81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/antlr4-project
 * [new ref]         a28cc1cc20830cb1e5282cad8b071c04beacee81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a28cc1c Rebuilt for java-21-openjdk as system jdk