$ git clone -n https://src.fedoraproject.org/rpms/web-assets.git /var/lib/mock/f45-build-38295-723/root/chroot_tmpdir/scmroot/web-assets
Cloning into '/var/lib/mock/f45-build-38295-723/root/chroot_tmpdir/scmroot/web-assets'...
$ git fetch origin 6f1bf769ef62cd82827b33b2ee6d8e0c3d5497b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/web-assets
 * [new ref]         6f1bf769ef62cd82827b33b2ee6d8e0c3d5497b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f1bf76 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild