$ git clone -n https://src.fedoraproject.org/rpms/pspg.git /var/lib/mock/f41-build-855832-167429/root/chroot_tmpdir/scmroot/pspg
Cloning into '/var/lib/mock/f41-build-855832-167429/root/chroot_tmpdir/scmroot/pspg'...
$ git fetch origin 342cbe068e0c10d1f4760a82bd531700b84c3764:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pspg
 * [new ref]         342cbe068e0c10d1f4760a82bd531700b84c3764 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 342cbe0 New upstream release