$ git clone -n https://src.fedoraproject.org/rpms/libva-v4l2-request.git /var/lib/mock/f45-build-17211-497/root/chroot_tmpdir/scmroot/libva-v4l2-request
Cloning into '/var/lib/mock/f45-build-17211-497/root/chroot_tmpdir/scmroot/libva-v4l2-request'...
$ git fetch origin 483d9438157737d78baf388781f54a3de8fe2a14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libva-v4l2-request
 * [new ref]         483d9438157737d78baf388781f54a3de8fe2a14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 483d943 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild