$ git clone -n https://src.fedoraproject.org/rpms/techtalk-pse.git /var/lib/mock/f45-build-36904-709/root/chroot_tmpdir/scmroot/techtalk-pse
Cloning into '/var/lib/mock/f45-build-36904-709/root/chroot_tmpdir/scmroot/techtalk-pse'...
$ git fetch origin 9c981a007742d1771e6b0e6fc98fc5ca6d8a2b6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/techtalk-pse
 * [new ref]         9c981a007742d1771e6b0e6fc98fc5ca6d8a2b6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c981a0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild