$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-plugins-good.git /var/lib/mock/f41-build-side-1-2657155-28483/root/chroot_tmpdir/scmroot/gstreamer1-plugins-good
Cloning into '/var/lib/mock/f41-build-side-1-2657155-28483/root/chroot_tmpdir/scmroot/gstreamer1-plugins-good'...
$ git fetch origin 685c683a89901aa9d52c2fdb3fbf0deee95a55e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-plugins-good
 * [new ref]         685c683a89901aa9d52c2fdb3fbf0deee95a55e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 685c683 1.24.7