$ git clone -n https://src.fedoraproject.org/rpms/pnm2ppa.git /var/lib/mock/f41-build-1023973-18174/root/chroot_tmpdir/scmroot/pnm2ppa
Cloning into '/var/lib/mock/f41-build-1023973-18174/root/chroot_tmpdir/scmroot/pnm2ppa'...
$ git fetch origin 6735a79f915ac1340185bfc2e975c62913eb2175:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pnm2ppa
 * [new ref]         6735a79f915ac1340185bfc2e975c62913eb2175 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6735a79 plans: fix url