$ git clone -n https://src.fedoraproject.org/rpms/plymouth.git /var/lib/mock/f41-build-850561-165462/root/chroot_tmpdir/scmroot/plymouth
Cloning into '/var/lib/mock/f41-build-850561-165462/root/chroot_tmpdir/scmroot/plymouth'...
$ git fetch origin 5f1e81f3d91f78635daab7f309f94bc612ea5eaf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plymouth
 * [new ref]         5f1e81f3d91f78635daab7f309f94bc612ea5eaf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f1e81f Backport upstream crash fix (rhbz#2282384)