$ git clone -n https://src.fedoraproject.org/rpms/python-aiohttp.git /var/lib/mock/f40-build-731326-103857/root/chroot_tmpdir/scmroot/python-aiohttp
Cloning into '/var/lib/mock/f40-build-731326-103857/root/chroot_tmpdir/scmroot/python-aiohttp'...
$ git fetch origin 83bf5781d578581e5ecb276479b82953d18b7be0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-aiohttp
 * [new ref]         83bf5781d578581e5ecb276479b82953d18b7be0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83bf578 Update to 3.8.6