$ git clone -n https://src.fedoraproject.org/rpms/python-google-cloud-os-config.git /var/lib/mock/f38-build-side-42-init-devel-864059-28428/root/chroot_tmpdir/scmroot/python-google-cloud-os-config
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-864059-28428/root/chroot_tmpdir/scmroot/python-google-cloud-os-config'...
$ git fetch origin aaa494dd87ebcea84f1211b25812e001aa8ac95c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-google-cloud-os-config
 * [new ref]         aaa494dd87ebcea84f1211b25812e001aa8ac95c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aaa494d Update to 1.15.1 rhbz#2182103