$ git clone -n https://src.fedoraproject.org/rpms/antlr.git /var/lib/mock/f40-build-791811-137740/root/chroot_tmpdir/scmroot/antlr
Cloning into '/var/lib/mock/f40-build-791811-137740/root/chroot_tmpdir/scmroot/antlr'...
$ git fetch origin 4c73536ec25fecec76474cbaffb8849c86ebc2d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/antlr
 * [new ref]         4c73536ec25fecec76474cbaffb8849c86ebc2d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c73536 Rebuilt for java-21-openjdk as system jdk