$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-bigtable.git /var/lib/mock/f38-build-side-42-init-devel-1035262-29746/root/chroot_tmpdir/scmroot/python-google-cloud-bigtable
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1035262-29746/root/chroot_tmpdir/scmroot/python-google-cloud-bigtable'...
$ git fetch origin 70ba006ece784dad974a77c6c9bec04d2dcf7396:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-bigtable
 * [new ref]         70ba006ece784dad974a77c6c9bec04d2dcf7396 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70ba006 Update to 2.20.0 rhbz#2224055