$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-plugins-good.git /var/lib/mock/f42-build-865323-173025/root/chroot_tmpdir/scmroot/gstreamer1-plugins-good
Cloning into '/var/lib/mock/f42-build-865323-173025/root/chroot_tmpdir/scmroot/gstreamer1-plugins-good'...
$ git fetch origin fbd2e0e4875b9b427c3346793ed507a1762f7e9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-plugins-good
 * [new ref]         fbd2e0e4875b9b427c3346793ed507a1762f7e9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbd2e0e 1.24.11