$ git clone -n https://src.fedoraproject.org/rpms/javacc-maven-plugin.git /var/lib/mock/f40-build-2480142-61614/root/chroot_tmpdir/scmroot/javacc-maven-plugin
Cloning into '/var/lib/mock/f40-build-2480142-61614/root/chroot_tmpdir/scmroot/javacc-maven-plugin'...
$ git fetch origin 25d84bbb3950210cab5defc43a8d585c4877eaa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/javacc-maven-plugin
 * [new ref]         25d84bbb3950210cab5defc43a8d585c4877eaa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25d84bb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild