$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-plugin-libav.git /var/lib/mock/f40-build-766585-124288/root/chroot_tmpdir/scmroot/gstreamer1-plugin-libav
Cloning into '/var/lib/mock/f40-build-766585-124288/root/chroot_tmpdir/scmroot/gstreamer1-plugin-libav'...
$ git reset --hard ef39d50c4d02d491dc4b3bcb4c729acf9f4d13c7
HEAD is now at ef39d50 1.22.8