$ git clone -n https://src.fedoraproject.org/rpms/jolokia-jvm-agent.git /var/lib/mock/f41-build-818844-14314/root/chroot_tmpdir/scmroot/jolokia-jvm-agent
Cloning into '/var/lib/mock/f41-build-818844-14314/root/chroot_tmpdir/scmroot/jolokia-jvm-agent'...
$ git fetch origin c1a30d7913efb76270fe4347b427e8d7eeb8a3d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jolokia-jvm-agent
 * [new ref]         c1a30d7913efb76270fe4347b427e8d7eeb8a3d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1a30d7 Eliminate use of obsolete %patchN syntax (#2283636)