$ git clone -n https://src.fedoraproject.org/rpms/jacktrip.git /var/lib/mock/f41-build-846132-162970/root/chroot_tmpdir/scmroot/jacktrip
Cloning into '/var/lib/mock/f41-build-846132-162970/root/chroot_tmpdir/scmroot/jacktrip'...
$ git fetch origin 2fb35d5fa038efc6620846cff65b35100fe2e87b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jacktrip
 * [new ref]         2fb35d5fa038efc6620846cff65b35100fe2e87b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fb35d5 Update to 2.3.1