$ git clone -n https://src.fedoraproject.org/rpms/gopass.git /var/lib/mock/f42-build-side-1-3517587-46098/root/chroot_tmpdir/scmroot/gopass
Cloning into '/var/lib/mock/f42-build-side-1-3517587-46098/root/chroot_tmpdir/scmroot/gopass'...
$ git fetch origin 60180165a595d164b94579bdf10a892798d8e0f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gopass
 * [new ref]         60180165a595d164b94579bdf10a892798d8e0f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6018016 Update to 1.15.16. Fixes rhbz#2361525