$ git clone -n https://src.fedoraproject.org/rpms/javapackages-tools.git /var/lib/mock/f41-build-side-2-python-2700565-30383/root/chroot_tmpdir/scmroot/javapackages-tools
Cloning into '/var/lib/mock/f41-build-side-2-python-2700565-30383/root/chroot_tmpdir/scmroot/javapackages-tools'...
$ git fetch origin 6d11b64ad11de99e69d8ab6d54d747fe9f502a73:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/javapackages-tools
 * [new ref]         6d11b64ad11de99e69d8ab6d54d747fe9f502a73 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d11b64 Switch to external tests