$ git clone -n https://src.fedoraproject.org/rpms/paprefs.git /var/lib/mock/f41-build-side-1-2650389-27586/root/chroot_tmpdir/scmroot/paprefs
Cloning into '/var/lib/mock/f41-build-side-1-2650389-27586/root/chroot_tmpdir/scmroot/paprefs'...
$ git fetch origin c51050f4febd743794d7e1a2c7d63d70dd33d338:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/paprefs
 * [new ref]         c51050f4febd743794d7e1a2c7d63d70dd33d338 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c51050f convert GPLv2+ license to SPDX