$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-firestore.git /var/lib/mock/f39-build-1512016-35554/root/chroot_tmpdir/scmroot/python-google-cloud-firestore
Cloning into '/var/lib/mock/f39-build-1512016-35554/root/chroot_tmpdir/scmroot/python-google-cloud-firestore'...
$ git fetch origin 1839f0b526ec2a3ca2a0b7c61f25b86769347fe5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-firestore
 * [new ref]         1839f0b526ec2a3ca2a0b7c61f25b86769347fe5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1839f0b [packit] 2.13.0 upstream release