$ git clone -n https://src.fedoraproject.org/rpms/python-pycountry.git /var/lib/mock/f40-build-1269182-23096/root/chroot_tmpdir/scmroot/python-pycountry
Cloning into '/var/lib/mock/f40-build-1269182-23096/root/chroot_tmpdir/scmroot/python-pycountry'...
$ git fetch origin 64d1ee398e1825a909dc9c40001b4e44eea36155:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pycountry
 * [new ref]         64d1ee398e1825a909dc9c40001b4e44eea36155 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64d1ee3 Update to latest version (#2284179)