$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-configuration.git /var/lib/mock/f40-build-2260648-54416/root/chroot_tmpdir/scmroot/apache-commons-configuration
Cloning into '/var/lib/mock/f40-build-2260648-54416/root/chroot_tmpdir/scmroot/apache-commons-configuration'...
$ git fetch origin c95a697874d1a13fedc15bc52fa18f3ee4d33450:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-configuration
 * [new ref]         c95a697874d1a13fedc15bc52fa18f3ee4d33450 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c95a697 Fix the jexl3 patch to create a JexlEngine correctly