$ git clone -n https://src.fedoraproject.org/rpms/fts-rest-client.git /var/lib/mock/f39-build-2085557-50079/root/chroot_tmpdir/scmroot/fts-rest-client
Cloning into '/var/lib/mock/f39-build-2085557-50079/root/chroot_tmpdir/scmroot/fts-rest-client'...
$ git fetch origin e6439079223d3cde6e4051da49309c25a1272825:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fts-rest-client
 * [new ref]         e6439079223d3cde6e4051da49309c25a1272825 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e643907 New upstream release v3.12.4