$ git clone -n https://src.fedoraproject.org/rpms/maven-artifact-transfer.git /var/lib/mock/f40-build-2186388-51354/root/chroot_tmpdir/scmroot/maven-artifact-transfer
Cloning into '/var/lib/mock/f40-build-2186388-51354/root/chroot_tmpdir/scmroot/maven-artifact-transfer'...
$ git fetch origin 4103e7433ee6419933de934dc426ebad77d042e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-artifact-transfer
 * [new ref]         4103e7433ee6419933de934dc426ebad77d042e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4103e74 Update javapackages test plan to f40