$ git clone -n https://src.fedoraproject.org/rpms/maven-surefire.git /var/lib/mock/f42-build-3403061-45134/root/chroot_tmpdir/scmroot/maven-surefire
Cloning into '/var/lib/mock/f42-build-3403061-45134/root/chroot_tmpdir/scmroot/maven-surefire'...
$ git fetch origin 981d3dd249b791ce7788db082ca6b8ba256ed129:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-surefire
 * [new ref]         981d3dd249b791ce7788db082ca6b8ba256ed129 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 981d3dd Remove javadoc subpackage