$ git clone -n https://src.fedoraproject.org/rpms/python-xarray.git /var/lib/mock/f39-build-1820392-41839/root/chroot_tmpdir/scmroot/python-xarray
Cloning into '/var/lib/mock/f39-build-1820392-41839/root/chroot_tmpdir/scmroot/python-xarray'...
$ git fetch origin e75d5c9d072343ef0d8c66512d0655d36e590905:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-xarray
 * [new ref]         e75d5c9d072343ef0d8c66512d0655d36e590905 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e75d5c9 Update to latest version (#2240764)