$ git clone -n https://src.fedoraproject.org/rpms/foomuuri.git /var/lib/mock/f45-build-9169-399/root/chroot_tmpdir/scmroot/foomuuri
Cloning into '/var/lib/mock/f45-build-9169-399/root/chroot_tmpdir/scmroot/foomuuri'...
$ git fetch origin 93e192d73af305031b80feb5ee56b5ef0be7d964:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/foomuuri
 * [new ref]         93e192d73af305031b80feb5ee56b5ef0be7d964 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93e192d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild