$ git clone -n https://src.fedoraproject.org/rpms/prrte.git /var/lib/mock/f40-build-2675412-67824/root/chroot_tmpdir/scmroot/prrte
Cloning into '/var/lib/mock/f40-build-2675412-67824/root/chroot_tmpdir/scmroot/prrte'...
$ git fetch origin c7f71489c078d152e33d5c0d59ffea55fd4d1445:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/prrte
 * [new ref]         c7f71489c078d152e33d5c0d59ffea55fd4d1445 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7f7148 Drop i686