$ git clone -n https://src.fedoraproject.org/rpms/python-aiohttp.git /var/lib/mock/f41-build-845924-162860/root/chroot_tmpdir/scmroot/python-aiohttp
Cloning into '/var/lib/mock/f41-build-845924-162860/root/chroot_tmpdir/scmroot/python-aiohttp'...
$ git fetch origin 5a8eb7fafd0f060e27a7cfc0b9b7b03dbe72b8cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-aiohttp
 * [new ref]         5a8eb7fafd0f060e27a7cfc0b9b7b03dbe72b8cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a8eb7f Update to 3.10.3 (close RHBZ#2305522)