$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-spanner.git /var/lib/mock/f39-build-1655287-40538/root/chroot_tmpdir/scmroot/python-google-cloud-spanner
Cloning into '/var/lib/mock/f39-build-1655287-40538/root/chroot_tmpdir/scmroot/python-google-cloud-spanner'...
$ git fetch origin de537a887997a89e7250adcce090360a1360b2d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-spanner
 * [new ref]         de537a887997a89e7250adcce090360a1360b2d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de537a8 [packit] 3.40.1 upstream release