$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-fplsa.git /var/lib/mock/f45-build-9495-404/root/chroot_tmpdir/scmroot/gap-pkg-fplsa
Cloning into '/var/lib/mock/f45-build-9495-404/root/chroot_tmpdir/scmroot/gap-pkg-fplsa'...
$ git fetch origin 47781a2a91e75acb9e45e0b805d1813c77bb2b7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-fplsa
 * [new ref]         47781a2a91e75acb9e45e0b805d1813c77bb2b7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47781a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild