$ git clone -n https://src.fedoraproject.org/rpms/nv-codec-headers.git /var/lib/mock/f41-build-side-1-2752234-31164/root/chroot_tmpdir/scmroot/nv-codec-headers
Cloning into '/var/lib/mock/f41-build-side-1-2752234-31164/root/chroot_tmpdir/scmroot/nv-codec-headers'...
$ git fetch origin b42ba3be6c8c86dcee277bc73cc13915a99712ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nv-codec-headers
 * [new ref]         b42ba3be6c8c86dcee277bc73cc13915a99712ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b42ba3b Update to 12.2.72.0