$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-private-ca.git /var/lib/mock/f39-build-1850326-42237/root/chroot_tmpdir/scmroot/python-google-cloud-private-ca
Cloning into '/var/lib/mock/f39-build-1850326-42237/root/chroot_tmpdir/scmroot/python-google-cloud-private-ca'...
$ git fetch origin 5eac2b7f3431ddfbb3a8379aa01f60f7380ce9b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-private-ca
 * [new ref]         5eac2b7f3431ddfbb3a8379aa01f60f7380ce9b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5eac2b7 Add packit config