$ git clone -n https://src.fedoraproject.org/rpms/python-arm-preprocessing.git /var/lib/mock/f42-build-side-1-3566312-46733/root/chroot_tmpdir/scmroot/python-arm-preprocessing
Cloning into '/var/lib/mock/f42-build-side-1-3566312-46733/root/chroot_tmpdir/scmroot/python-arm-preprocessing'...
$ git fetch origin a0860cc9aa50386142a2321e0d77cd32bd13904e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-arm-preprocessing
 * [new ref]         a0860cc9aa50386142a2321e0d77cd32bd13904e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0860cc Update to 0.2.5