$ git clone -n https://src.fedoraproject.org/rpms/rubygem-mini_portile.git /var/lib/mock/f45-build-35088-693/root/chroot_tmpdir/scmroot/rubygem-mini_portile
Cloning into '/var/lib/mock/f45-build-35088-693/root/chroot_tmpdir/scmroot/rubygem-mini_portile'...
$ git fetch origin 8745326787a32bfd9b49e52bad17be0c1877934d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-mini_portile
 * [new ref]         8745326787a32bfd9b49e52bad17be0c1877934d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8745326 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild