$ git clone -n https://src.fedoraproject.org/rpms/python-xarray.git /var/lib/mock/f42-build-side-1-3517646-46098/root/chroot_tmpdir/scmroot/python-xarray
Cloning into '/var/lib/mock/f42-build-side-1-3517646-46098/root/chroot_tmpdir/scmroot/python-xarray'...
$ git fetch origin 6e553d61be75c212a07305083ebe768bec5f70ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-xarray
 * [new ref]         6e553d61be75c212a07305083ebe768bec5f70ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e553d6 Fix additional architecture-specific bugs