$ git clone -n https://src.fedoraproject.org/rpms/python-flask-gravatar.git /var/lib/mock/f45-build-30686-647/root/chroot_tmpdir/scmroot/python-flask-gravatar
Cloning into '/var/lib/mock/f45-build-30686-647/root/chroot_tmpdir/scmroot/python-flask-gravatar'...
$ git fetch origin f9958dd057cdaced1e82a08e21dcb2952bc0d932:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flask-gravatar
 * [new ref]         f9958dd057cdaced1e82a08e21dcb2952bc0d932 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9958dd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild