$ git clone -n https://src.fedoraproject.org/rpms/python-fastapi.git /var/lib/mock/f41-build-side-2-python-2737605-30841/root/chroot_tmpdir/scmroot/python-fastapi
Cloning into '/var/lib/mock/f41-build-side-2-python-2737605-30841/root/chroot_tmpdir/scmroot/python-fastapi'...
$ git fetch origin d2b88d7293f290192b8b8b13c7fd538323bd1711:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fastapi
 * [new ref]         d2b88d7293f290192b8b8b13c7fd538323bd1711 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2b88d7 Allow Starlette 0.39.x