$ git clone -n https://src.fedoraproject.org/rpms/javacc-maven-plugin.git /var/lib/mock/f39-build-1505771-35161/root/chroot_tmpdir/scmroot/javacc-maven-plugin
Cloning into '/var/lib/mock/f39-build-1505771-35161/root/chroot_tmpdir/scmroot/javacc-maven-plugin'...
$ git fetch origin 4d007029a9b306dc19a79612121a48afbf9fde1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/javacc-maven-plugin
 * [new ref]         4d007029a9b306dc19a79612121a48afbf9fde1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d00702 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild