$ git clone -n https://src.fedoraproject.org/rpms/fts-rest-client.git /var/lib/mock/f40-build-1966268-25208/root/chroot_tmpdir/scmroot/fts-rest-client
Cloning into '/var/lib/mock/f40-build-1966268-25208/root/chroot_tmpdir/scmroot/fts-rest-client'...
$ git fetch origin bc6fa89bae7fd2f093e3b1988a0bcc45327bf1cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fts-rest-client
 * [new ref]         bc6fa89bae7fd2f093e3b1988a0bcc45327bf1cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc6fa89 New upstream release v3.13.2