$ git clone -n https://src.fedoraproject.org/rpms/pop-launcher.git /var/lib/mock/f45-build-39730-751/root/chroot_tmpdir/scmroot/pop-launcher
Cloning into '/var/lib/mock/f45-build-39730-751/root/chroot_tmpdir/scmroot/pop-launcher'...
$ git fetch origin 4319497935910714e615cf8ac5a6c2f85ce48a2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pop-launcher
 * [new ref]         4319497935910714e615cf8ac5a6c2f85ce48a2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4319497 Update to 1.6.0