$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-os-config.git /var/lib/mock/f39-build-1886938-42784/root/chroot_tmpdir/scmroot/python-google-cloud-os-config
Cloning into '/var/lib/mock/f39-build-1886938-42784/root/chroot_tmpdir/scmroot/python-google-cloud-os-config'...
$ git fetch origin 22d3113db666c3cd792b9f9bbf812f7b7a1523dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-os-config
 * [new ref]         22d3113db666c3cd792b9f9bbf812f7b7a1523dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22d3113 Update to 1.15.3