$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-vaapi.git /var/lib/mock/f41-build-846118-162967/root/chroot_tmpdir/scmroot/gstreamer1-vaapi
Cloning into '/var/lib/mock/f41-build-846118-162967/root/chroot_tmpdir/scmroot/gstreamer1-vaapi'...
$ git fetch origin 8be6db235d46fa39584544f312ffb900fb4a4881:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-vaapi
 * [new ref]         8be6db235d46fa39584544f312ffb900fb4a4881 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8be6db2 1.24.7