$ git clone -n https://src.fedoraproject.org/rpms/pspg.git /var/lib/mock/f39-build-1846800-42126/root/chroot_tmpdir/scmroot/pspg
Cloning into '/var/lib/mock/f39-build-1846800-42126/root/chroot_tmpdir/scmroot/pspg'...
$ git fetch origin cfee9af22bbb18a68a43c4806a4e00e29a3f32a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pspg
 * [new ref]         cfee9af22bbb18a68a43c4806a4e00e29a3f32a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfee9af New upstream release