$ git clone -n https://src.fedoraproject.org/rpms/maven-archetype.git /var/lib/mock/f40-build-2563906-62171/root/chroot_tmpdir/scmroot/maven-archetype
Cloning into '/var/lib/mock/f40-build-2563906-62171/root/chroot_tmpdir/scmroot/maven-archetype'...
$ git fetch origin 055b1c6204cb7d8cc417048f9d4be48012deb84f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-archetype
 * [new ref]         055b1c6204cb7d8cc417048f9d4be48012deb84f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 055b1c6 Merge branch 'rawhide' into f40