$ git clone -n https://src.fedoraproject.org/rpms/git-octopus.git /var/lib/mock/f45-build-11079-426/root/chroot_tmpdir/scmroot/git-octopus
Cloning into '/var/lib/mock/f45-build-11079-426/root/chroot_tmpdir/scmroot/git-octopus'...
$ git fetch origin f54aa1330b344ec88cff6eddaf01860e0ddb3669:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-octopus
 * [new ref]         f54aa1330b344ec88cff6eddaf01860e0ddb3669 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f54aa13 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild