$ git clone -n https://src.fedoraproject.org/rpms/foxtrotgps.git /var/lib/mock/f42-build-3354212-45019/root/chroot_tmpdir/scmroot/foxtrotgps
Cloning into '/var/lib/mock/f42-build-3354212-45019/root/chroot_tmpdir/scmroot/foxtrotgps'...
$ git fetch origin e0bf58f43a2e14f96e01a51c1e95da9700ebd88b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/foxtrotgps
 * [new ref]         e0bf58f43a2e14f96e01a51c1e95da9700ebd88b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0bf58f Unfortunately foxtrotgps is not maintained since v1.2.2 released 2019-07-10. Now compilation fails with multiple warnings/errors. Other users complain as well in https://bugs.launchpad.net/foxtrotgps/+bug/1968050. So I declare this package as unmaintained and dead. Sorry.