$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-plugins-bad-free.git /var/lib/mock/f38-build-side-42-init-devel-570753-25910/root/chroot_tmpdir/scmroot/gstreamer1-plugins-bad-free
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-570753-25910/root/chroot_tmpdir/scmroot/gstreamer1-plugins-bad-free'...
$ git fetch origin f019b5f32ebb6fa69e7dd0049961d23db3049156:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-plugins-bad-free
 * [new ref]         f019b5f32ebb6fa69e7dd0049961d23db3049156 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f019b5f Update to 1.22.1