$ git clone -n https://src.fedoraproject.org/rpms/pdns.git /var/lib/mock/f41-build-832556-157513/root/chroot_tmpdir/scmroot/pdns
Cloning into '/var/lib/mock/f41-build-832556-157513/root/chroot_tmpdir/scmroot/pdns'...
$ git fetch origin 77a828101c2af53047f9094cba22cdba78f17845:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pdns
 * [new ref]         77a828101c2af53047f9094cba22cdba78f17845 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77a8281 Switch to openssl-devel-engine