$ git clone -n https://src.fedoraproject.org/rpms/maven-archiver.git /var/lib/mock/f40-build-2242522-53669/root/chroot_tmpdir/scmroot/maven-archiver
Cloning into '/var/lib/mock/f40-build-2242522-53669/root/chroot_tmpdir/scmroot/maven-archiver'...
$ git fetch origin c51a8be2160602a62b364742ea4194634c419ac0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-archiver
 * [new ref]         c51a8be2160602a62b364742ea4194634c419ac0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c51a8be Update javapackages test plan to f40