$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-plugins-bad-free.git /var/lib/mock/f41-build-808250-145747/root/chroot_tmpdir/scmroot/gstreamer1-plugins-bad-free
Cloning into '/var/lib/mock/f41-build-808250-145747/root/chroot_tmpdir/scmroot/gstreamer1-plugins-bad-free'...
$ git fetch origin c647c97e73a8899f312b3dbef9db56e5ce1797da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-plugins-bad-free
 * [new ref]         c647c97e73a8899f312b3dbef9db56e5ce1797da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c647c97 1.24.3