$ git clone -n https://src.fedoraproject.org/rpms/pwkickstart.git /var/lib/mock/f45-build-29085-635/root/chroot_tmpdir/scmroot/pwkickstart
Cloning into '/var/lib/mock/f45-build-29085-635/root/chroot_tmpdir/scmroot/pwkickstart'...
$ git fetch origin 76f3c428295fac825600cc04d3afbba66a69529a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pwkickstart
 * [new ref]         76f3c428295fac825600cc04d3afbba66a69529a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76f3c42 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild