$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-design.git /var/lib/mock/f45-build-9469-404/root/chroot_tmpdir/scmroot/gap-pkg-design
Cloning into '/var/lib/mock/f45-build-9469-404/root/chroot_tmpdir/scmroot/gap-pkg-design'...
$ git fetch origin 6b5bac40aaf89007132cf068eb6274a6c3f9c66d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-design
 * [new ref]         6b5bac40aaf89007132cf068eb6274a6c3f9c66d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b5bac4 Use the GAP declarative buildsystem