$ git clone -n https://src.fedoraproject.org/rpms/fts-rest-client.git /var/lib/mock/epel8-build-60961129-6586804/root/chroot_tmpdir/scmroot/fts-rest-client
Cloning into '/var/lib/mock/epel8-build-60961129-6586804/root/chroot_tmpdir/scmroot/fts-rest-client'...
$ git fetch origin f5c43e199e8b6079955dca6ae14f161aaa3a4276:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fts-rest-client
 * [new ref]         f5c43e199e8b6079955dca6ae14f161aaa3a4276 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5c43e1 New upstream release v3.14.2