$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcodecs.git /var/lib/mock/f41-build-side-114591-60926031-6585985/root/chroot_tmpdir/scmroot/kf6-kcodecs
Cloning into '/var/lib/mock/f41-build-side-114591-60926031-6585985/root/chroot_tmpdir/scmroot/kf6-kcodecs'...
$ git fetch origin a2745f2c3b9f333a4ffae08ac243de55ab299009:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcodecs
 * [new ref]         a2745f2c3b9f333a4ffae08ac243de55ab299009 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2745f2 6.16.0